Dewhot NDCT16DH, Instructions Manual

Page: 21 / 30

Page 21 of 30 Dewhot | Gas geyser manual
Dewhot | Gas geyser manual
Symptom FAULT
The units temperature jumps
all over the place, from 65-35,
is sometimes consistent but
mostly not.
Flow sensor may be faulty, but this can be
intermittent in its function- the pilot may
fire again when the temperature should be
coming down.
The unit will fire and the pilot
will take but not the main
burner and there is no smell of
gas
Loom to gas is faulty.
The gas section is faulty, check the first and
second stage solenoids with a voltmeter.
Unit suddenly goes cold during
use
Batteries may be flat
Regulator is delivering too high a gas
pressure, unit shuts off, hence cold water
Unit resets to 45 degrees
The geyser needs a PRV on the cold water
supply as inconsistent and high water
pressure spikes can cause it to reset
The pre-set temperature is too high for the
geyser to achieve and after a day or two of
trying will re-set to factory setting 45 deg.
Unit fires and dies, fires and
dies, fires and dies four times in
a row then fails totally.
Gas section wiring loom is faulty.