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47
TROUBLESHOOTING GCCO-C CONT’D
NO MOTOR COMPUTER MODE
PROBABLE CAUSE
CORRECTIVE ACTION
No 24 VAC on Interface
board
Check for 24 VAC at
TP4
to common (
“D”
).
If 24 VAC is not measured:
Confirm that back up relay is energizing.
Replace if defective.
If 24 VAC is measured:
Check for 24 VAC at
TP5.
Replace Interface board if defective.
NO HEAT MANUAL MODE
NOTE: Fan must be operating before trouble shooting No heat.
PROBABLE CAUSE
CORRECTIVE ACTION
Pilot burner fails to light
Perform the following “trial ignition” and look and listen for spark:
Attempt to light the pilot burner. If the burner does not ignite
after 30 seconds, cycle power and repeat “trial ignition”. The
pilot may require several trials for ignition to bleed air from the
gas piping. After the initial attempt pilot should only require 2-5
seconds for normal start up.
Spark observed
Check for 24 VAC at pilot valve.
If 24 VAC is measured,
turn oven off:
Check for pilot burner orifice for blockage. Clean and repair as
necessary.
Perform trial ignition as described in above section.
Replace gas valve.
If 24 VAC is not measured:
Check for 24 VAC at PV on spark module.
Check continuity on wire between PV on spark module and Pilot
Valve.
Summary of Contents for GCCO-C
Page 29: ...29 GENERAL CONT D ONE PAN TWO PAN THREE PAN FOUR PAN FIVE PAN ...
Page 59: ...59 TECHNICAL DATA CONT D GCCO C TEST POINT LAYOUT TP 2 TP 1 TP 3 TP 4 TP5 TP6 TP7 ...
Page 61: ...61 WIREING DIAGRAM GCCO T ...
Page 62: ...62 WIRING DIAGRAM GCCO AP ...
Page 63: ...63 WIRING DIAGRAM GCCO SII ...
Page 64: ...64 WIRING DIAGRAM GCCO C ...
Page 65: ...65 WIRING DIAGRAM GCCO PP ...
Page 66: ...66 WIRING DIAGRAM GCCO PT ...