auer HRC70 17 - Compressor Start-up Faults; Appliance Alerts and Error Signals

- INSTALLER HIGHTEMPERATURE ENERGY EFFICIENT HEAT PUMP MANUAL -
40
6.7 - Compressor start-up faults
GREEN light RED light Possible causes Solutions
On - Running normally -
Flashing - • Insufficient voltage
• Check the power supply voltage on the
heat pump: it must be over 200 volts
(minimum)
2 flashes
• Abnormal drop in voltage during start-up
• Insufficient power grid voltage
• Check the compliance of the power supply
from the general meter to the heat pump
• Contact your electricity provider to ensure
that power grid sizing is adapted
3 flashes
• Over-current at start-up • Contact an AUER-approved technical centre
4 flashes
• Internal starter defect • Replace starter
5 flashes
• Start-up process incomplete
• Check the power supply to the heat pump
before and during start-up.
It must not drop below 200 volts
Three-phased started for the HRC
70
25kW three phase heat pump
Alert signal Possible causes Solutions
2 flashes
• Phases are inversed • Inverse 2 phases on the power supply of the starter
3 flashes
• Power supply voltage
outside authorised range
• Check the voltage on the three phased network
• Check the compliance of the power supply
from the general meter to the heat pump
• Contact your electricity provider to ensure
that power grid sizing is correct
4 flashes
• Non-compliant power supply frequency
• Contact an AUER-approved technical centre
• Contact your electricity provider
5 flashes
• Compressor blocked • Contact an AUER-approved technical centre
6 flashes
• Start-up process incomplete
• Check the power supply to the heat pump
before and during start-up.
It must not drop below 350 volts
7 flashes
• Starter overheating • Contact an AUER-approved technical centre
8 flashes
• Over-current at start-up • Contact an AUER-approved technical centre
9 flashes
• Imbalance of phases
• Check voltage on the three phased network
• Check the compliance of the power supply
from the general meter to the heat pump
• Contact your electricity provider
N.B: The swimming pool sensor error is only signalled when the ohmic value is too low. The absence of a swimming pool sensor does not
generate a fault because it either means that there is no swimming pool or that the swimming pool function has been deactivated.
6.8 - Alerts and errors which are signalled by the appliance
Faults are signalled by the back-lighting  ashing and a sound signal.
Press the dial to stop the sound signal. The alarm will stop but the error will still be displayed.
If it is an automatic reset fault, the signal will disappear once the problem has been recti ed.
If it is a manual reset fault, rectify the problem and then press on the dial to make the signal disappear. Manual reset faults are indicated with
the following symbol:
To view the list of errors and  nd out how to rectify them, please refer to: "Operating errors" and "Error message codes".