Issue 2 14/07/16
79
Fault Finding
7
Put your hand on the gas valve – can you feel it energize? If
not, check the voltages at the ignition module across pins MV
on the plug GND.
If there is a 24 VAC problem, check to see if the ‘Rectifier
Harness’ is secure. If it is secure, replace the ‘Gas Valve’.
If you can feel the gas valve energize, check the main gas
supply is not in the off position.
Is there minimum gas supplied to water heater as stated on the
rating plate? If not, increase the supply pressure to the water
heater.
Measure the mircoAmps through the flame sensor using a
multimeter. Is there at least 4 microAmps? If not, replace the
‘Flame Sensor’ or flame sensor wire.
Is the tank temperature above the temperature set point?
Does the T&P relief valve leak? If yes, replace ‘Thermostat
PC Board’.
Check ‘Pressure Switch’ (exhaust pressure switch) as
previously mentioned.
Check ‘Collector Limit Switch’ as previously mentioned.
If the above switches are functioning, please contact the
Technical Support Department at Andrews Water Heaters for
further assistance.
7.7 Burner flame keeps going out
7.8 Thermostat does not satisfy
7.9 Fan did not post purge
7.6 Main valve does not turn on
Summary of Contents for ECOflo EC230/600
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