PLEASE NOTE:
3. Close the unit
13.1. ERROR CODES
Error description Unit behaviour Potential cause Potential solution
4 – Supply fan failure The unit is not working. Overheated fan.
Defective thermal contact.
Determine the cause of the overheating (defective bearing, short circuit, defective thermal contact...) and, if necessary, replace the fan.
5 – Exhaust fan error The unit is not working.
Overheated fan.
Defective thermal contact.
Determine the cause of the overheating (defective bearing, short circuit...) and, if necessary, replace the fan.
6 - Inlet filter clogged The unit is ventilating. Clogged filter.
Check the condition of the filter and, if necessary, replace the filter.
If a new filter is installed run the filter calibration.
7 – Exhaust filter clogged The unit is ventilating. Clogged filter.
Check the condition of the filter and, if necessary, replace the filter.
If a new filter is installed run the filter calibration.
8 - Failure in pre-heating 1 The unit is ventilating.
Overheated pre-heater 1.
Open pre-heater thermostat.
Check that air can flow freely through the unit the electric heat exchanger might not be cooling sufficiently.
Check the safety thermostat on the electric heater for damage or malfunction.
9 - Failure in exchanger 1 The unit is ventilating.
Overheated post-heater 1.
Defective temperature sensor.
Open pre-heater thermostat.
Check that air can flow freely through the unit the electric heat exchanger might not be cooling sufficiently.
Check the safety thermostat on the electric heater for damage or malfunction.
Check the associated temperature sensors for damage or malfunction.
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Error description Unit behaviour Potential cause Potential solution
10 - Failure in exchanger 2 The unit is ventilating.
Overheated post-heater 2.
Defective temperature sensor.
Open post-heater thermostat.
Check that air can flow freely through the unit the electric heat exchanger might not be cooling sufficiently.
Check the safety thermostat on the electric heater for damage or malfunction.
Check the associated temperature sensors for damage or malfunction.
Check the control 0-10V output to the external heater.
11 - Failure in pre- heating 2 The unit is ventilating.
Overheated pre-heater 2.
Defective temperature sensor.
Open pre-heater thermostat.
Check that air can flow freely through the unit the electric heat exchanger might not be cooling sufficiently.
Check the safety thermostat on the electric heater for damage or malfunction.
Check the associated temperature sensors for damage or malfunction.
Check the control 0-10V output to the external heater.
12 – CO2 sensor failure The unit is ventilating. Defective air quality sensor. Check that the AQS is installed and wired correctly or check that it is operating correctly (output signal value 0-10V).
13 - Failure of rotary heat exchanger The unit is ventilating. Failure of rotary heat exchanger.
Check that the RHE error output is correctly connected to the unit PCB.
Check that the wheel belt is not damaged, and the wheel can be turned by hand.
Check the rotation control sensor functionality.
15 - Heat pump error The unit is ventilating. Heat pump failure.
Check that the heat pump error value is correctly connected to the unit PCB.
If necessary, check that the heat pump is operating correctly (according to the instructions of its manufacturer).
Therm-X MVHRU IOM Page 98 of 109 Version 2.3, 18/09/2020
Error description Unit behaviour Potential cause Potential solution
16 – Inlet – External temperature
sensor failure (T-EXT1) The unit is not working. Defective or disconnected temperature sensor.
Check that the sensor is correctly connected to the PCB and test it by measuring its resistance (the resistance value at +20°C is around 10kΩ).
17 – Inlet – Failure of the
temperature sensor downstream of
the HR (T-EXT2) The unit is not working. Defective or disconnected temperature sensor.
Check that the sensor is correctly connected to the PCB and test it by measuring its resistance (the resistance value at +20°C is around 10kΩ).
18 – Inlet – Temperature sensor failure in the supply duct
(T-EXT3) The unit is not working. Defective or disconnected temperature sensor.
Check that the sensor is correctly connected to the PCB and test it by measuring its resistance (the resistance value at +20°C is around 10kΩ).
19 - Inlet - Temperature sensor failure after the second exchanger
(T-EXT4) The unit is not working. Defective or disconnected temperature sensor.
Check that the sensor is correctly connected to the PCB and test it by measuring its resistance (the resistance value at +20°C is around 10kΩ).
20 - Exhaust – Temperature sensor
failure in the return duct (T-INT0) The unit is not working. Defective or disconnected
temperature sensor. Check that the sensor is correctly connected to the PCB and test it by measuring its resistance (the resistance value at +20°C is around 10kΩ).
21 – Exhaust – Temperature sensor
failure in the return duct (T-INT1) The unit is not working. Defective or disconnected temperature sensor.
Check that the sensor is correctly connected to the PCB and test it by measuring its resistance (the resistance value at +20°C is around 10kΩ).
22 – Exhaust – Failure of the temperature sensor of the exchanger's anti-freeze protection sensor (T-INT2)
The unit is not working. Defective or disconnected temperature sensor.
Check that the sensor is correctly connected to the PCB and test it by measuring its resistance (the resistance value at +20°C is around 10kΩ).
23 - Failure in the inlet water sensor of exchanger (T_WATER_
IN) The unit is not working. Defective or disconnected
temperature sensor.
Check that the sensor is correctly connected to the PCB and test it by measuring its resistance (the resistance value at +20°C is around 10kΩ).
24 - Failure in the return water sensor of exchanger
(T_WATER_OUT) The unit is not working. Defective or disconnected temperature sensor.
Check that the sensor is correctly connected to the PCB and test it by measuring its resistance (the resistance value at +20°C is around 10kΩ).
25 – Room temperature sensor
failure (T_ROOM) The unit is ventilating. Defective or disconnected
temperature sensor. Check that the sensor is correctly connected to the PCB and test it by measuring its resistance (the resistance value at +20°C is around 10kΩ).
Therm-X MVHRU IOM Page 99 of 109 Version 2.3, 18/09/2020
Error description Unit behaviour Potential cause Potential solution
26 - Failure in the pressure sensor
of the exhaust filter The unit is ventilating. Defective or disconnected pressure sensor.
Check whether the pressure tubing is kinked, disconnected or clogged by dirt.
Check that module F is connected and operating correctly.
The pressure sensor or module F might need to be replaced.
27 - Failure in the pressure sensor
of the inlet filter The unit is ventilating. Defective or disconnected pressure sensor.
Check whether the pressure tubing is kinked, disconnected or clogged by dirt.
Check that module F is connected and operating correctly.
The pressure sensor or module F might need to be replaced.
28 - Failure in the pressure sensor
of the supply fan The unit is not working. Defective or disconnected pressure sensor.
Check whether the pressure tubing is kinked, disconnected or clogged by dirt.
Check that module F is connected and operating correctly.
The pressure sensor or module F might need to be replaced.
29 - Failure in the pressure sensor
of the exhaust fan The unit is not working. Defective or disconnected pressure sensor.
Check whether the pressure tubing is kinked, disconnected or clogged by dirt.
Check that module F is connected and operating correctly.
The pressure sensor or module F might need to be replaced.
30 - Failure in the pressure sensor
of the VAV supply duct The unit is not working. Defective or disconnected pressure sensor.
Check whether the pressure tubing is kinked, disconnected or clogged by dirt.
Check that module F is connected and operating correctly.
The pressure sensor or module F might need to be replaced.
32 - Air quality sensor failure The unit is ventilating. Defective air quality sensor. Check that the quality sensor is connected correctly and check that it is operating correctly (output signal value 0-10V).
Therm-X MVHRU IOM Page 100 of 109 Version 2.3, 18/09/2020
Error description Unit behaviour Potential cause Potential solution
36 - B module error The unit is not working. The unit cannot control the peripherals connected to Module
B.
The equipment is unable to communicate with module B.
Check whether the communication cable between PCB A and B is damaged.
If necessary, replace module B.
37 - Condensate tray overflow The unit is not working. The level sensor has detected a high level of water in the drain
tray.
Check that the level sensor is connected correctly.
Check that the level sensor is operating correctly.
Check whether the condensate tray is not clogged preventing the condensate from draining correctly.
39 – Global error The unit is not working. Error. This error indicates that there has been any error detected. It is always followed by another error message, which will specify the defect.
50 - Supply filter clogged > 80% The unit is ventilating. Clogged filter. Filter change is recommended.
51 - Extract filter clogged > 80% The unit is ventilating. Clogged filter. Filter change is recommended.
70 - Anti-freeze protection of the
water heat exchanger The unit is ventilating. The anti-freeze protection of the water heat exchanger is active.
The automatic protection of the water exchanger has been activated in order to prevent damage due to low air/water temperature.
This is an autonomous function and will be terminated once the risk of frost becomes non-existent.
71 - Water heater - waiting for water
temperature The unit is ventilating. The unit measures the temperature of the inlet fluid to
the heat exchanger.
Autonomous process to assess the water temperature in the exchanger to activate the next steps in the heat exchanger control process.
Therm-X MVHRU IOM Page 101 of 109 Version 2.3, 18/09/2020
Error description Unit behaviour Potential cause Potential solution
72 - Water heater - waiting for
supply air temperature The unit is ventilating. The unit measures the temperature of the air flowing
through the heat exchanger.
Autonomous process to assess the temperature of the air flowing through the exchanger to activate the next steps in LPHW control process
73 - WCO detects temperature of
the water supply (cold/hot) The unit is ventilating. The unit measures the temperature of the inlet fluid into
the WCO exchanger.
Autonomous process to assess the water temperature in the inlet pipe to the heat exchanger in order to activate the next steps in the WCO hot/cold changeover process. This process takes 2 minutes.
74 – Flow reduction, minimum temperature in the supply duct not achieved
The unit operates in a
restricted mode. The unit is trying to reach the set minimum duct temperature value.
The minimum supply air set point temperature has not been reached.
The performance of the unit is being automatically corrected (airflow reduction) to reach this minimum setpoint.
76 - Heat pump defrost The unit operates in a
restricted mode. The unit is waiting until the heat pump defrosts.
The heat pump is reporting that it has activated the defrost sequence.
The unit is in defrost mode.
This is an autonomous procedure. Once the heat pump defrost sequence terminates the unit will resume normal operation.
78 - Pre-freecooling active The unit is ventilating. Temperature evaluation for the FREECOOLING mode in
progress.
Preparation for freecooling mode in progress. This process takes 10 minutes.
This evaluates the temperature and the conditions necessary to activate this mode.
The unit will turn off automatically or go into FREECOOLING once this process is completed.
Therm-X MVHRU IOM Page 102 of 109 Version 2.3, 18/09/2020 13.2. ELECTRIC HEATER OVERHEAT
The safety thermostat disconnects if the electric heater overheats. After eliminating the cause of the overheat the safety thermostat located on the electric heater must be reset manually.
The location of the safety thermostat is indicated with the label RESET in each unit.
Due to design constraints in some units it might be required to disconnect the heater and remove it from the unit to access the reset switch.Location of thermostat manual reset in HRFL2 equipment
Location of thermostat manual reset in HR85/HR95 equipment
Therm-X MVHRU IOM Page 103 of 109 Version 2.3, 18/09/2020 13.3. FUSES
Location of fuses on the control panel:PLEASE NOTE: In the event of loss and subsequent recovery of the mains supply power the unit returns to the operating state stored before the failure took place.
The unit should always recall the last stored operating status and all settings.
If you fail to find or remove the cause of the fault, or if the repair requires intervention to the device, contact our offices.
Therm-X MVHRU IOM Page 104 of 109 Version 2.3, 18/09/2020 13.4. IF THE FAULT PERSISTS
If you have not managed to fix the problem on your own please contact our offices.
IMPORTANT:
To facilitate the troubleshooting procedure please have the following data handy before contacting Barkell:
- Project reference (i.e. BK012345)
- Equipment type and model (i.e. HRFL2-040HPCBE75-XS0S-0A3)
- Serial number of the equipment (can be found on the manufacturing label on the access panels of the equipment)
- Running hours of the equipment up to the moment of the fault
- A list of the installed accessories (both supplied by Barkell or 3rd parties) accompanied by their technical datasheets and model reference if possible
- A description or schematic of the mechanical and electrical installation accompanied by a photographic record if possible
- A detailed description of the fault and procedures attempted to solve it (i.e. error codes, step by step troubleshooting, etc..)
Therm-X MVHRU IOM Page 105 of 109 Version 2.3, 18/09/2020 14. SPARES
The estimated average equipment lifetime is 15 years when maintained in accordance with the instructions in the installation, operation and maintenance manual.
We recommend acquiring 2 sets of spare filters as these will likely have to be replaced at the very least twice a year.
The fans might have to be replaced every 4-5 years as the bearings wear out, however this highly depends on the annual working hours of the equipment and they can even last the lifetime of the equipment when operated under normal conditions in accordance with the IOM manual.
We don’t expect any other components of the unit to fail during its lifetime when operated under normal conditions and in accordance with the IOM manual.
If it’s critical that the equipment is kept operating at all times (i.e. the equipment is the only source of heating/cooling into the space being conditioned, ventilation is essential for the space being conditioned, etc…) or that the maintenance downtime is very reduced then we would recommend to acquire:- Replacement filters (2 sets) - Replacement fans
- Replacement motor and belt for rotary heat exchanger (HR85) - Replacement touchscreen controller
- Replacement electric heater auto and manual re-set thermostats (if installed) - Replacement electric heater relay (if installed)
Please note the above covers only some the parts that are most susceptible to failure due to wear and tear.This does not include parts that might fail due to lack of proper installation, operation and maintenance or due to unforeseeable circumstances.
If you need to order a replacement part please refer to the spare’s lists provided together with this manual and contact our office.Therm-X MVHRU IOM Page 106 of 109 Version 2.3, 18/09/2020 14.1. SPARE FILTERS
UNIT
MODEL UNIT SIZE EN779 ISO16890 FILTER REFERENCE TYPE FILTER DIMENSIONS (WxHxD) HR95 080-H G4 ISO Coarse 50% FILTR-HR95-2-H0800-G4-PRE PANEL 390x280x48 HR95 080-V G4 ISO Coarse 50% FILTR-HR95-2-V0800-G4-PRE PANEL 463x285x48 HR95 080-H G4 ISO Coarse 50% FILTR-HR95-2-H0800-G4 PANEL 390x280x96 HR95 080-V G4 ISO Coarse 50% FILTR-HR95-2-V0800-G4 PANEL 463x285x96 HR95 080-H F7 ISO ePM1 50% FILTR-HR95-2-H0800-F7-MPP PANEL 390x280x48 HR95 080-V F7 ISO ePM1 50% FILTR-HR95-2-V0800-F7-MPP PANEL 463x285x48 HR95 150-V G4 ISO Coarse 50% FILTR-HR95-2-V1500-G4-PRE PANEL 543x435x48 HR95 150-H G4 ISO Coarse 50% FILTR-HR95-2-H1500-G4-PRE PANEL 682x320x48 HR95 150-V G4 ISO Coarse 50% FILTR-HR95-2-V1500-G4 PANEL 543x435x96 HR95 150-H G4 ISO Coarse 50% FILTR-HR95-2-H1500-G4 PANEL 682x320x96 HR95 150-H F7 ISO ePM1 50% FILTR-HR95-2-H1500-F7-MPP PANEL 543x435x48 HR95 150-V F7 ISO ePM1 50% FILTR-HR95-2-V1500-F7-MPP PANEL 682x320x48 HR95 250-V G4 ISO Coarse 50% FILTR-HR95-2-V2500-G4-PRE PANEL 583x585x48 HR95 250-H G4 ISO Coarse 50% FILTR-HR95-2-H2500-G4-PRE PANEL 902x410x48 HR95 250-V G4 ISO Coarse 50% FILTR-HR95-2-V2500-G4 PANEL 583x585x96 HR95 250-H G4 ISO Coarse 50% FILTR-HR95-2-H2500-G4 PANEL 902x410x96 HR95 250-V F7 ISO ePM1 50% FILTR-HR95-2-V2500-F7-MPP PANEL 583x585x48 HR95 250-H F7 ISO ePM1 50% FILTR-HR95-2-H2500-F7-MPP PANEL 902x410x48 HR95 350-V G4 ISO Coarse 50% FILTR-HR95-2-V3500-G4-PRE PANEL 851x572x48 HR95 350-H G4 ISO Coarse 50% FILTR-HR95-2-H3500-G4-PRE PANEL 960x572x48 HR95 350-V G4 ISO Coarse 50% FILTR-HR95-2-V3500-G4 PANEL 851x572x96 HR95 350-H G4 ISO Coarse 50% FILTR-HR95-2-H3500-G4 PANEL 960x572x96 HR95 350-H F7 ISO ePM1 50% FILTR-HR95-2-H3500-F7-MPP PANEL 851x572x48 HR95 350-V F7 ISO ePM1 50% FILTR-HR95-2-V3500-F7-MPP PANEL 960x572x48 HR95 450-V G4 ISO Coarse 50% FILTR-HR95-2-V4500-G4-PRE PANEL 971x572x48 HR95 450-V G4 ISO Coarse 50% FILTR-HR95-2-V4500-G4 PANEL 971x572x96 HR95 450-V F7 ISO ePM1 50% FILTR-HR95-2-V4500-F7-MPP PANEL 971x572x48 HR95 550-V G4 ISO Coarse 50% FILTR-HR95-2-V5500-G4-PRE PANEL 1334x572x48 HR95 550-V G4 ISO Coarse 50% FILTR-HR95-2-V5500-G4 PANEL 1334x572x96 HR95 550-V F7 ISO ePM1 50% FILTR-HR95-2-V5500-F7-MPP PANEL 1334x572x48
HR85 070-V M5 ISO ePM10 50% FILTR-HR85-V070 M5 PANEL 546x278x48
HR85 070-U M5 ISO ePM10 50% FILTR-HR85-U070 M5 PANEL 546x260x48
HR85 100-V M5 ISO ePM10 50% FILTR-HR85-V100 M5 BAG 705x345x330
HR85 100-U M5 ISO ePM10 50% FILTR-HR85-U100 M5 BAG 705x290x290
HR85 150/200-V/U M5 ISO ePM10 50% FILTR-HR85-VU150-VU200 M5 PANEL 805x430x48 HR85 300/450-V/U M5 ISO ePM10 50% FILTR-HR85-VU300-VU450 M5 BAG 1060x525x300 HR85 500/750-V M5 ISO ePM10 50% FILTR-HR85-V550-V750 M5 BAG 1410x715x420 HR85 900/12K-V M5 ISO ePM1 50% FILTR-HR85-V900-V12K M5 BAG 2 x 805x840x550
HR85 070-V F7 ISO ePM1 50% FILTR-HR85-V070 F7 PANEL 546x278x48
HR85 070-U F7 ISO ePM1 50% FILTR-HR85-U070 F7 PANEL 546x260x48
Therm-X MVHRU IOM Page 107 of 109 Version 2.3, 18/09/2020 UNIT
MODEL UNIT SIZE EN779 ISO16890 FILTER REFERENCE TYPE FILTER DIMENSIONS (WxHxD)
HR85 100-V F7 ISO ePM1 50% FILTR-HR85-V100 F7 BAG 705x345x330
HR85 100-U F7 ISO ePM1 50% FILTR-HR85-U100 F7 BAG 705x290x290
HR85 150/200-V/U F7 ISO ePM1 50% FILTR-HR85-VU150-VU200 F7 PANEL 805x430x48 HR85 300/450-V/U F7 ISO ePM1 50% FILTR-HR85-VU300-VU450 F7 BAG 1060x525x300 HR85 500/750-V F7 ISO ePM1 50% FILTR-HR85-V550-V750 F7 BAG 1410x715x420 HR85 900/12K-V F7 ISO ePM1 50% FILTR-HR85-V900-V12K F7 BAG 2 x 805x840x550
HRFL2 040 F9 ISO ePM1 70% FILTR-HRFL2-040-F9 PANEL 285x235x96
HRFL2 040 F7 ISO ePM1 50% FILTR-HRFL2-040-F7 PANEL 285x235x96
HRFL2 040 M5 ISO ePM10 50% FILTR-HRFL2-040-M5 PANEL 285x235x96
HRFL2 070 F9 ISO ePM1 70% FILTR-HRFL2-070-F9 PANEL 455x235x96
HRFL2 070 F7 ISO ePM1 50% FILTR-HRFL2-070-F7 PANEL 455x235x96
HRFL2 070 M5 ISO ePM10 50% FILTR-HRFL2-070-M5 PANEL 455x235x96
HRFL2 150 F9 ISO ePM1 70% FILTR-HRFL2-150-F9 PANEL 585x310x96
HRFL2 150 F7 ISO ePM1 50% FILTR-HRFL2-150-F7 PANEL 585x310x96
HRFL2 150 M5 ISO ePM10 50% FILTR-HRFL2-150-M5 PANEL 585x310x96
HRFL2 200 F9 ISO ePM1 70% FILTR-HRFL2-200-F9 PANEL 750x395x96
HRFL2 200 F7 ISO ePM1 50% FILTR-HRFL2-200-F7 PANEL 750x395x96
HRFL2 200 M5 ISO ePM10 50% FILTR-HRFL2-200-M5 PANEL 750x395x96
Therm-X MVHRU IOM Page 108 of 109 Version 2.3, 18/09/2020 15. DISPOSAL
Please ensure the equipment is turned off before beginning the disposal procedure.
The equipment includes recyclable materials and should be dismantled in a specialized centre so that the recyclable materials can be re-used. Parts that cannot be recycled in should be taken to a legal waste disposal site.
Materials must be disposed of in accordance with applicable national regulations and directives.
This product must be properly disposed of in accordance with local laws, regulations and directives.
The product contains batteries; therefore, these must be recycled or disposed of separately from other waste.
When the battery or product reaches the end of its lifecycle, contact the distributor or local authorities for information about recycling options.
Separate collection and recycling of your product and its battery will help to protect natural resources and ensures that the product will be recycled in such a way that protects human health and the environment.16. WARRANTY
All units are provided with 36 months warranty starting from the date of delivery.
The warranty covers replacement parts only.17. CONCLUSION