PROBLEM:
24CGP10
Gas Boiler Over
Pressurizes
(15# Safety
valve opens)
Boiler over
pressurizes
Does operating
pressure switch
open at proper
setting (check
service manual for
that steamer)?
Replace
operating
pressure
switch
No
Does the burner
continue to burn
with operating
pressure switch
open?
Yes
Replace gas
valve.
Yes
Does the pressure
in the gauge
continue to rise
with no burners
on?
No
Descale boiler
Yes
No
Replace the
safety valve.
PROBLEM: 24CGP10 Stops Producing Steam
Steamer stops
steaming
Does the amber
light in the reset
switch come on?
Is the temperature
sensitive dot
(surrounded by a
yellow circle) on
the water board
white?
Replace
the water board. It has
reached a temperature of
over 180
degrees.
Yes
No
The
ignition module
has gone into
lockout. See
Boiler won't
ignite
Yes
Is the low water
indicator on (120
VAC bewtween
the IND and L2
terminals on the
waterboard )?
Clean or
replace the low
water probe
Is high pressure
switch opening
prematurely?
Replace high
pressure switch
Delime the
boiler
No
Yes
No
Does the steamer start to
steam when the operating
pressure switch is
temporarily
by-passed?
No
Replace the
operating pressure
switch
Yes
No
Does the low
water indicator
light go off with a
jumper btween the
LOW and C
terminals on the
waterboard?
Yes
Yes
Replace the
water board
No
Does the Boiler
build pressure?
No
With the cabinet in
the timed position and
time on the timer is
the 120 VAC to the
steam solenoid?
Yes
Replace Steam
Solenoid
Yes
With the cabinet in
the manual
postion is there
120 VAC to the
steam solenoid?
No
Replace the
timer
Yes
With the optional
door switch by
passed, is there
120 VAC to the
steam solenoid?
No
Replace the
door switch
Yes
Replace the
timed/manual
switch
No