EN
75
Code displayed
Cause
Consequence
Troubleshooting
Error 25
Pressure switch
opening or thermal
compressor safety
HP stopped.
Heating in ELEC.
Check the connections of the compressor (mark
R1), the pressure switch, the start capacitor (15mF)
and the hot gas valve (Mark T2). Check the
resistances of the compressor coils.
Error 28
Defrosting system
fault
HP stopped.
Heating in ELEC.
Check the cleanliness of the evaporator.
Check the R134A fluid level (defrosting device).
Check the fan's operation (M1 mark) and power
supply on the terminal block.
Check that the condensate is drained properly.
Check the hot gas valve connections (T2 mark) and
its operation (TEST menu).
W.30.1
Ineffective HP
heating
HP stopped.
Heating in ELEC.
Check the fluid level.
Check the fan's operation (M1 mark) and power
supply on the terminal block.
W.30.2
Ineffective HP
heating
HP stopped.
Heating in ELEC.
Check the fluid level.
Check the fan's operation (M1 mark) and power
supply on the terminal block.
W.30.3
Defective
pressure
regulator
HP stopped.
Heating in ELEC.
Check there is no ice on the pipes between the
regulator and the evaporator.
Check the fluid level.
If full, replace the regulator.
Overview
Installation
Use
Maintenance
Warranty
Fault observed
Possible cause
Diagnostics and troubleshooting
Water not hot enough.
The main power supply to the
water heater is not continuous.
Set the temperature setpoint to a
lower level.
ECO mode selected and air
temperature outside range.
Heating element or its wiring
partially out of order.
Check that power supply to the appliance
is continuous.
Check that there is no return of cold
water to the hot water circuit, (possible
faulty mixer tap).
Set the setpoint temperature higher.
Select the AUTO mode. Check the
duration of the programming ranges.
Check the resistance on the spark plug
connector and that the beam is in good
condition.
Check the safety thermostat.
4.2. Other faults without error code display.
Temperature/ohmic value correspondence table for the product's air, evaporator and thermowell sensors
(CTN 10k
Ω
).
Temperature in °C
-20 -15 -10
-5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
97.9 73.6 55.8 42.7 32.9 25.5 20 15.8 12.5 10
8
6.5 5.3
4.4 3.6
3
2.5 2.1 1.8 1.5 1.3
Resistance in k
Ω
Summary of Contents for 200L C
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