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INSTALLATION
PILOT
-C14-
MANUAL
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28
Display
Error
Possible causes
Consequences
Reset
cuto. hpre1
High pressure switch HP1
- Check the status of the fi lter valve
- Check that the heating system is well drained
- Check the PAC circulator for proper operation
- The set temperature for heating during warmer months
is too high
- Clean plate heat exchanger inlet
- Problem with refrigerant fl uid load
- Failure of the check valve or 4-way valve
Intervention on the refrigeration circuit by authorised
personnel
heat pump stopped
manual
cuto. hpre2
High pressure switch HP2
- Check the status of the fi lter valve
- Check that the heating system is well drained
- Check the PAC circulator for proper operation
- The set temperature for heating during warmer months
is too high
- Clean plate heat exchanger inlet
- Problem with refrigerant fl uid load
- Flow valve or 4-way valve fault
Intervention on the refrigeration circuit by authorised
personnel
heat pump stopped
manual
t cy lind
Tank sensor out of place
The water sensor is out of place in the tank, or it is
placed too low in the tank (placed below the heat
exchanger or near the cold water inlet)
DHW circuit stopped
manual
cp1 senso.
T1 defect
Defect of incorrect connection of the temperature
sensor for the compressor – or compressor n°1
depending on the model (connector TCP1 on the HP)
heat pump stopped
automatic after repair
cp2 senso.
T2 defect
Defect of incorrect connection of the temperature
sensor for compressor n°2 (TCP2)
heat pump stopped
automatic after repair
T
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wa ter
Tballon defect
Defect of incorrect connection of the temperature
sensor for the DHW tank (terminal «Bal»)
DHW circuit stopped
automatic after repair
T
-
flow
TsPAC defect
Defect of incorrect connection of the temperature
sensor at the heat pump outlet (TwOUT)
heat pump stopped
automatic after repair
T
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PI LOTE
TsEAU defect
Defect of incorrect connection of the temperature
sensor of the pilot
back-up stopped
automatic after repair
T
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PI LOTE
diag
Overheating at pilot outlet
- Check operation of circulators 1 and 2 (option)
- Check the operating status of the power relays of the
electric power packs
- check the status of the backup boiler control
- check that the flow rate of the auxiliary boiler is
suffi
cient.
back-up stopped
automatic
T
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PI LOTE
err
Multiple overheatings at pilot
outlet
Perform the same checks as for the T-PILOT DIAG alert
above.
back-up stopped
manual
T
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RE Turn
TePAC defect
Defect of incorrect connection of the temperature
sensor at the heat pump inlet (TwIN)
heat pump stopped
automatic after repair