19
PROBLEM
CAUSE
ACTION
No spark.
The piezo electric ignitor is faulty.
Electrode is fractured.
Electrode is dirty.
Spark gap is too wide.
Incorrect battery polarity.
Poor earth.
Flat battery.
Spark generator faulty.
Replace with new one.
Replace with new one.
Clean it with bristle brush, etc.
Adjust the gap to 3.2-4.0mm.
Check.
Check.
Check.
Check.
Pilot fails to light.
Blocked injector.
No gas supply.
Clean using soft bristle only.
Check.
Pilot is difficult to
light with spark.
The pilot injector is clogged.
Air in gas line.
Clean or replace pilot jet.
Depress the control button to
ignition position long enough to
expel all air.
Purge gas supply through hob.
Pilot ignites but
fails to stay alight.
The flame on pilot burner does
not impinge on the
thermocouple correctly.
Loose thermocouple.
Magnetic valve is faulty.
Faulty thermocouple.
The main control button is not
fully depressed.
C.P.D.S.D is faulty.
Clean or replace pilot jet.
Re-position thermocouple.
Check thermocouple for tightness.
Replace with new one.
Replace with new one.
Press it down hard and hold that
position for about 10 seconds.
Replace it.
When main burner
ignites, the pilot
flame becomes
much smaller.
Insufficient gas pressure.
Check operating pressure at
burner and inlet. Check the whole
gas supply line for blockages,
including gas filter on the heater.
Main burner does
not ignite even
though hot water
outlets have been
turned on.
Insufficient water pressure.
Faulty diaphragm in water
control body assembly.
Hot and cold water pipes crossed.
Contamination in water
control assembly.
Water filter blocked.
Check water pressure at inlet to
heater. Check for blockages in
supply line or hot pipes, taps,
shower hoses and heads. If using
a pump, check pump for faults.
Renew diaphragm.
Check, re-connect correctly.
Clean.
Clean.
Содержание D-61B
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