Unit Not Heating Properly (No Gas Error) - Southbend CG90-1 Operator's Manual

C O
OMBINATION VEN

Unit Not Heating Properly (No Gas Error)

Disconnect power. Remove control panel thumbscrew and
Start unit. Check gas supply pressure. (There is an inlet
pressure tap on the gas combination valve that can be used
for this purpose.) Supply pressure should be > 7" W.C. for
Place unit in oven
mode at 500
Check voltage between
HI terminal and C
terminal of gas valve.
approximately 24
No
Replace control board.
O
Unit Not Heating Properly (No Gas Error)
slide control panel out, Reconnect power.
natural gas and > 11" W.C. for propane.
Remove front lower panel and burner box cover.
With door
closed, do main
No
burners come
on?
°F.
Close door.
Is voltage
Yes
volts?
Replace gas valve.
' M 1180963
PERATOR S ANUAL
T
ROUBLESHOOTING
Yes
Place unit in oven
mode at 200°F.
Open door.
Depress door switch.
Does
blower come
No
on?
Go to page 29, Check gas manifold pressure.
Blower Not
Running Properly.
purpose.) Pressure should be
approximately 4.0" W.C. for
natural gas or approximately
Does gas
pressure meet
No
specifications?
Replace gas
combination valve.
Yes
(There is a tap on the gas
combination valve for this
10.0" W.C. for propane.
Yes
Check gas
valve wiring.
P
AGE
27