SERVICE
I N F O R M A T I O N
Product: WM 33/44
Date: 00-03-15
Reference: B Haglund
Group: 21
Number: 154
ÄO: Page: 2(2)
WM 33 / 44.
Fault tracing
E Do not heat. Fills water to correct level.
Check: Supply Voltage, Heater, Thermistor, Level switch, as below
Start on program 3. It now runs for 8 minutes with soaking speed (40 rpm),
and thereafter turns over to normal speed (52 rpm) and the heating starts.
1. Check with water at correct level and with supply voltage:
1.1 Voltage by heater (230 V).
see also 2.1-2.3 below
1.2. Supply voltage line-side L :
Between N (PF4) and level switch N1-11 or N1-14 (230 V)
If no voltage at N1-14 = incorrect level or faulty level switch.
1.3 Supply voltage neutral-side :
Between L1 (PF1) and PF4-PF3, PF6 or PF7 (230 V)
2. Check with water at correct level and no supply voltage:
2.1. Heater - No break down of heater.
2.2 Thermistor - check value = 40-60 kohm by 20-30º C. (Higher value by lower temp)
2.3 Temperature setting switch - any bad connections switch- timer
