Panasonic PAW-DHW270C1F Handbuch Seite 77

Overview
Code displayed
Pressure switch
Error 25 opening or thermal
compressor safety
Defrosting system
Error 28
Ineffective HP
W.30.1
Ineffective HP
W.30.2
Defective
W.30.3
regulator
Temperature/ohmic value correspondence table for the product's air, evaporator and thermowell sensors
(CTN 10k Ω).
-20 -15 -10 -5 0
97.9 73.6 55.8 42.7 32.9 25.5 20 15.8 12.5 10
4.2. Other faults without error code display.
Fault observed
Water not hot enough.
Installation
Cause Consequence
HP stopped.
Heating in ELEC.
HP stopped.
fault Heating in ELEC.
HP stopped.
heating Heating in ELEC.
HP stopped.
heating Heating in ELEC.
HP stopped.
pressure
Heating in ELEC.
Temperature in °C
5 10 15 20
Resistance in kΩ
Possible cause
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.
Use Maintenance
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.
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).
Check the fluid level.
Check the fan's operation (M1 mark) and power
supply on the terminal block.
Check the fluid level.
Check the fan's operation (M1 mark) and power
supply on the terminal block.
Check there is no ice on the pipes between the
regulator and the evaporator.
Check the fluid level.
If full, replace the regulator.
25 30 35 40 45
8 6.5 5.3 4.4 3.6
Diagnostics and troubleshooting
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.
Warranty
Troubleshooting
50 55 60 65 70
3 2.5 2.1 1.8 1.5 1.3
EN
75 80
75