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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
Resistance fault 6.8 kΩ
Compressor discharge sensor fault
Discharge temperature too high
High pressure protection
Low pressure protection
Error
Description
codes
P01
P02
P04
P05
The sensor is open or has short-circuited.
P07
P09
P081
P082 Discharge temperature > 120°C
E01
The sensor is open or has short-circuited.
E02
The sensor is open or has short-circuited.
Solution
Check the blue AIN6 connector on
the board and measure the sensor's
resistance; if it is under 100 Ω or over
500 kΩ, replace it.
Check the red AIN7 connector on
the board and measure the sensor's
resistance; if it is under 100 Ω or over
500 kΩ, replace it.
Check the AIN9 connector on the board
and measure the sensor's resistance; if it
is under 100 Ω or over 500 kΩ, replace it.
Check the yellow AIN8 connector on
the board and measure the sensor's
resistance; if it is under 100 Ω or over
500 kΩ, replace it.
Check the green AIN5 connector on
the board and measure the sensor's
resistance; if it is under 100 Ω or over
500 kΩ, replace it.
Check the AIN11 connector on the board
and measure the resistance; replace it if
R < 6.8 kΩ
Check the black AIN12 connector on
the board and measure the sensor's
resistance; if it is under 100 Ω or over
500 kΩ, replace it.
Measure the discharge temperature
at the outlet of the compressor; if
measured temperature < 120°C, replace
the sensor. Perform a non-condensable
test
Verify the AIN4 connectors 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 AIN3 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
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