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AHP60 14/18 kW - Installation, Use and Maintenance
6. TROUBLESHOOTING
6.1. Troubleshooting of failures without error code
Problems encountered
HMI off with heat pump
powered up
Error 495 on Ecomod heat
pump control or heat pump
unit does not follow the
Ecomod heat pump control
instruction
HMI blocked, cannot operate
the heat pump unit in backup
mode
6.2. Error codes and repair
When the heat pump is at fault, it displays OFF and the alarm light is on. To see the error code, you must use PRG2
twice.
If an automatic reset fault appears, the heat pump restarts at the latest 6 minutes after the error code disappears.
In the event of a fault requiring manual reset, the fault is cleared by powering down the heat pump.
Code Description
External
safety
E000
element
triggered
High
E001
pressure
error
50 / 70
Cause
Power supply phase reversal
No bus dialog between heat
pump controller and Ecomod
Heat Pump Control unit
heat pump unit in Ecomod heat
pump control slave mode
Cause
Activates the ON/OFF input
remotely, input open
The pressure sensor detects
a pressure that is higher than
the "high pressure setpoint"
(41.5 bar).
It is reset when the pressure
drops back down below 32.5
bars.
If the error occurs more than 3
times in an hour, it needs to be
reset manually
Solution
Reverse the cabling between 2 power supply
phases
Power up the heat pump.
Pair Ecomod heat pump control and heat pump
unit : leave the Ecomod heat pump control
powered up, switch the heat pump unit power
supply on / off for a few seconds.
Cancel the Ecomod heat pump control and heat pump
unit pairing: power down the Ecomod heat pump control
or disconnect the communication bus between the 2
then switch the heat pump unit on / off for a few seconds.
Solution
•
Closes the digital input X15.1/15.2
•
Check if an error occurs even when the mode is
changed, by checking the operation of the 4 way
valve (4WV)
•
Check that the position of the unit respects the
minimum distances (see paragraph 3.4.2).
•
Check the electronic expansion valve EEV is
operating and attached correctly.
•
Check the fan is operating correctly; if it is not
operating, check the presence of the 230 Vac on
CN1 on the FD1/FD2 boards. Check the connection
between the CN2s and the fan.
00U07352240-A_ EN
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