Service manual

G.Fire Service Manual 8 Issue A — © Masport, March 2004
1
2
3
NO
4
Is the thermostat
sensing temperatures
above room temperatures?
Move the thermostat
away from heat sources
(e.g. the heater or sunlight)
Y
ES
Y
ES
7
8
Y
ES
NO
Y
ES
Wall mounted? Programmable?
9
Does the heater light when
the wires at the two terminals
on the wall thermostat are
connected together by a
j
umper wire?
*
5
6
Is the thermostat a
remote one? ( Hand held
or wall mounted)
Ensure that room air
can circulate freely past
the sensing bulb
Y
ES
10
12
Y
ES
13
15
Replace batteries
and re-test
Is the thermopile
output more than 325 mV
when disconnected
from the control valve?
14
Does the heater light when
the two thermostat terminals on
the valve (ACC models), or the
thermostat terminals are
connected by a
j
umper wire?
*
Y
ES
Replace the
wall thermostat
and re-test
Do the batteries in the
hand unit or the ACC
receiver require replacing?
(Usually once a season)
11 Do the batteries in
the wall thermostat
require replacing?
(Usually once a season)
(*) = Some models only
Replace control
valve and re-test
Replace thermopile
and re-test
16
Repair wiring from heater
to wall unit or valve to
receiver and re-test
17
18
Y
ES
Is the room temperature
above the set temperature?
Normal operation
NOTE: When hand-held remote thermostats are set to MANUAL, they do not operate as thermostats
but give direct control. In the AUTO setting they transmit a thermostat signal to the receiver from time
to time, so there can be some delay,
w
hen in this setting, before the fire receives a signal to light or
change flame height (modulate). In the MANUAL setting, there is no time delay for signals to the
receiver.
F
— THERMOSTAT HEATERS. MAIN BURNER WILL NOT
LIGHT WITHIN 30 SECONDS.
ON HEATERS FITTED WITH PILOT LIGHTS, THE PILOT MUST BE ALIGHT BEFORE
THE THERMOSTAT CAN TURN ON THE FIRE.
Y
ES
NO
NO
NO
NO
NO
NO
NO
NO