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6. APPENDIX (continued)
Problem
Water inlet sensor fault
Water outlet sensor fault
Outside temperature sensor fault
De-icing sensor fault
Compressor aspiration sensor defect
6.8 kΩ resistance fault
Compressor discharge sensor fault
High pressure protection
Low pressure protection
Flow sensor fault
Input/Output temperature difference
> 13°C
Antifreeze protection Cold mode
Communication problem
Level 1 antifreeze protection
Level 2 antifreeze protection
Pressure sensor fault
Error
Description
codes
P01
P02
P04
P05
The sensor is open or has short-circuited.
P07
P09
P081
E01
The sensor is open or has short-circuited.
E02
The sensor is open or has short-circuited.
E03
The sensor is open or has short-circuited.
E06
Applicable in Cold mode only
E07
Water output temperature < 4°C
No communication between the parent
E08
electronic card and the Inverter card
2°< Water temperature < 4°
E19
and Air temperature < 0°
Water temperature < 2°
E29
and Air temperature < 0°
PP
The sensor is open or short-circuiting
Solution
Check the AI/DI06 connections on the
card or replace the sensor
Check the AI/DI07 connections on the
card or replace the sensor
Check the AI/DI09 connections on the
card or replace the sensor
Check the AI/DI08 connections on the
card or replace the sensor
Check the AI/DI05 connections on the
card or replace the sensor
Check the AI/DI11 connections on the
card or replace the sensor
Check the AI/DI12 connections on the
card or replace the sensor
Check the AI/DI04 connections on the
card or replace the sensor
Check the water flow
Check the water flow detector
Check the valve opening
Check the by-pass
Check the evaporator is not clogged
Water temperature too hot
Incondensable problem after
maintenance, empty and evacuate the
cooling circuit
Fluid load too high, remove fluid into a
liquid bottle
Check the AI/DI03 connections on the
card or replace the sensor
Large coolant leak, search for the leak
with the detector
Air flow too low, check the ventilator
rotation speed
Check the evaporator is not clogged,
clean its surface
Check the AI/DI02 connections on the
card or replace the sensor
Lack of water, check the filtration pump
operation
Check the stop valve opening
Check the by-pass adjustment
Lack of water, check the filtration pump
operation
Check the stop valve opening
Check the by-pass adjustment
Stop the heat pump, empty the
condenser risk of freezing
Check the connections (see electrical
diagram)
Stop heat pump operation, empty the
condenser to avoid freezing, by default
the heat pump starts the filtration pump
to avoid icing over
Stop heat pump operation, empty the
condenser to avoid freezing, by default
the heat pump starts the filtration pump
and the heat pump to avoid icing over.
Check the connections see electrical
diagram
39
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