3 of 15
SYMPTOM
POSSIBLE CAUSE OF FAILURE
SOLUTION
No Spark
Water valve O-rings are blocked.
Disassemble Water Valve. Work the water pin manually to unblock
them / Change the top cover of the water valve.
Photo 10.
All models
Main gas valve seal is blocked.
Work the gas pin manually to unblock the O-ring.
Photo 11.
Change Gas valve.
2.- NO IGNITION
Water Heater sparking but the burner does not ignite.
SYMPTOM
POSSIBLE CAUSE OF FAILURE
SOLUTION
Battery Voltage very low. Sparkling is very at low frequency and
sounds very weak.
Replace Battery. Use Alkaline battery.
Photo 1
Battery is not correctly inserted in the Battery box.
Check position of the Battery.
Photo 1
No gas.
Low gas pressure.
Open gas valve. / Check gas pressure.
Main Gas Valve is not opened. Microswitch needs adjustment
Adjust Microswitch. Must be activated only with main valve opened
The spark is not generated in the sparking electrode.
Check humidity on electrodes.
Photo 5.
Check position of electrodes or whether they are deformed.
There is no voltage in Servo valve terminal.
Check the Electronic circuit earth connection
. Photo 6.
Check the wiring.
Change the Electronic circuit.
It sparks but
the burner does
not ignite
In case there is voltage in servo terminal.
Change the gas valve. The servo is incorporated in the gas valve.
3.- THE WATER FLOW IS VERY LOW
SYMPTOM
POSSIBLE CAUSE OF FAILURE
SOLUTION
Water pressure is too low.
Change the position of the water selector to MAX..
Photo 4
The water filter is dirty.
Clean the water filter. Change the water filter.
Photo 3.
The water flow is
very SMALL and the
water is coming out
VERY HOT.
The heat exchanger in combustion chamber is obstructed.
Clean the heat exchanger.
Change the combustion chamber.