9
SECTION 2: TROUBLE SHOOTING
2.
If the boiler is running, but exhibits one of the
following conditions, observe the operating
light conditions and use the procedure(s) under
the appropriate heading on the referenced page(s)
noted.
IF BOILER IS OPERATING (CONDITIONALLY):
REF.
CONDITION
DESCRIPTION
PAGE
1
Boiler ignites (8 sec.)
but shuts-off
15
2
Boiler cycles but
won’t light
16-19
3
Boiler “short-cycling”
19-21
4
Boiler condensate
water leaks
22-23
5
Boiler noise -
control/adjustment
24-28
CONDITION A
GC-4 LIGHT OFF; RED LIGHT OFF; AMBER LIGHT OFF.
This indicates no 115V to the boiler.
POSSIBLE CAUSE
VERIFICATION
SOLUTION
Power Supply
With a voltmeter, check for 115V.
If no 115V, check circuit breaker at
On AM-100 & 150 terminals1 & 4.
disconnect switch and supply wiring.
On AM-300 terminals 1 & 3.
Connect if necessary.
If 115V, proceed with this check.
Rocker Switch
With a voltmeter, check for 115V.
If no 115V, operate switch. If no
On AM-100 & 150 terminals 3 & 4.
115V, check wiring to switch.
On AM-300 terminals 2 & 3.
If ok replace switch.
If 115V but no amber light, proceed
with check.
Amber Light
With a voltmeter, check for 115V
If 115V, replace switch.
across terminals 2 & 3 on Rocker
Switch.
If no 115V, check wiring.
CAUTION: Label all wires prior to disconnection
when servicing controls. Wiring errors can cause
improper and dangerous operation.
Verify proper operation after servicing.
PRELIMINARY OPERATIONAL CHECK
Refer to Section 3 - “SERVICING PROCEDURES” for list
of service tools.
1.
UPON ARRIVAL AT SERVICE CALL: First - check
the status of the boiler operating lights. If the
boiler is not running, follow the procedures under
the appropriate heading on the referenced pages
below.
IF BOILER IS NOT RUNNING:
GC-4A
RED
AMBER
REF.
CONDITION
LIGHT
LIGHT
LIGHT
PAGE
A
OFF
OFF
OFF
9
B
OFF
OFF
ON
10
C
OFF
ON
*
11
D
ON
*
*
12
E
Blinking
*
*
13-14
*Lights OFF indicate burned out bulb or loose wiring.
