-
INSTALLATION
DS170 PILOT
MANUAL
-
29
Display
Error
Possible causes
Consequences
Reset
hp o utput.
Overheating at HP outlet
The temperature at the heat pump outlet is abnormally
high
- Check the status fi lter valve : Clean the fi lter
- Check PAC circulator fl ow is suffi
cient
- Check operation of circulators 1 and 2 (option)
heat pump stopped
automatic
hp o utput
ERR
Multiple overheatings at HP
outlet
- Drop in fl ow rate when traveling through the heat pump
- Reapeated heating requests for low heating needs
(installation design)
heat pump stopped
manual
cp1 power
Compressor 1 power supply
error
There is a problem with the power supply to the
compressor (cable,...)
heat pump stopped
manual
cp2 power
Compressor 2 power supply
error
There is a problem with the power supply to the
compressor (cable,...)
heat pump stopped
manual
evap. senso.
Defrosting sensor error
Error when measuring the evaporation temperature
- Check operation of air probe and low sensor pressure
- check 4-way valve tilting
- check that the compressor starter is not faulty (for the
models concerned)
- Check that the evaporator probe is not covered with
ice (for the models concerned)
heat pump stopped
manual
ext. senso.
diag
Exterior sensor placement error
- The exterior sensor is badly positioned and is being
infl uenced by heat or cold sources
- The exterior sensor or the air sensor is defective
informative message
manual
PRES Sure
Lack of water pressure
Water pressure is less than 0.3 bars
- The water pressure in the heating circuit must be higher
to 0.5bar cold
- Check heating circuit tightness and repair leaks of
possible water
- Purge air in high areas and on the pilot
- Check that the PAC safety valve is watertight
- Check that the pilot safety valve is watertight
- Check that the expansion tank is large enough for the
facility volume
complete stop
automatic after
pressure is returned
cp1 ramp
Temperature ramp is insuffi
cient
for Compressor 1
- Compressor blocked or error in power supply (cable,
voltage)
- Defrosting valve blocked
- Compressor 1 probe failed
HP stopped and restart
(with anti-short cycle)
automatic
cp2 ramp
Temperature ramp is insuffi
cient
for Compressor 2
- Compressor blocked or error in poiwer supply (cable,
voltage)
- Defrosting valve blocked
- Compressor 2 probe failed
HP stopped and restart
(with anti-short cycle)
automatic
REPR OG /
PILOT / hp
Reprogramming error
An error is detected on the reprogramming circuit on
one the bus’s circuit boards
- Try a new bus’s circuit boards programming
- If the problem persists, reprogramming must be done
in the factory
informative message
automatic after repair
cuto. lpre
Low pressure error
- The set temperature for heating during colder months
is too low
- Check that nothing obstructs the battery or interferes
with the fan operation
heat pump stopped
automatic
cuto. lpre
ERR
Low pressure error
- The set temperature for heating during colder months
is too low
- Check the good fan operation
- Check the surface condition of the fi nned battery and
remove anything that might impede the passage of air
through the rear grille (sheets or other...)
- In case of total ice setting, stop the heat pump and let
it melt, sprinkle with hot water if necessary
- Refrigeration fl uid load problem (fl uid leakage?)
- Blockage or failure of defrost valve or pressure regulator
Intervention on the refrigerant circuit by authorised
personnel
heat pump stopped
manual
