Standard Oven Only; Convection Base Oven Only - Garland MASTER SERIES Installation, Operating & Service Manual

TROUBLE SHOOTING GUIDE continued
PROBLEM
Low millivolt output on open circuit
tests.
Low millivolt output high in open
circuit test, but low in closed circuit test.
Millivolt output high on closed circuit
test, but blame safety tap will not stay
open.
Door will not stay closed.
Door will not stay open.
Door not closing on one side.
Door not level or low in center.

Standard Oven Only

PROBLEM
Burner flame shuts off when oven is at
required temperature.

Convection Base Oven Only

PROBLEM
COOK/COOL DOWN switch set to COOK
position. Light off. Motor working.
COOK/COOL DOWN switch set to COOK
position. Light off. Motor not working.
COOK/COOL DOWN switch set to COOK
position. Light on. Motor not working
Thermostat set to temp. Pilot on but
oven not heating.
Noisy motor.
COOK/COOL DOWN switch set to COOL
position. Light on. Motor not working
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POSSIBLE CAUSE
Pilot flame too small.
Defective thermocouple.
Faulty flame safety device.
Faulty flame safety device.
Insufficient tension on springs.
Broken spring.
Broken hinge link.
Too much tension on springs.
Door warped.
Trunnion support loose.
Trunnion support worn.
POSSIBLE CAUSE
Thermostat has incorrect bypass rate.
POSSIBLE CAUSE
No power to oven.
Defective COOK/COOL DOWN switch.
Faulty wiring.
Defective COOK/COOL DOWN switch.
Defective door switch.
Door switch out of alignment.
Oven door open.
Faulty wiring.
Defective motor.
Main ON-OFF/pilot gas valve set to OFF. Turn gas valve to FULL ON position.
Gas solenoid valve not opening.
Defective solenoid valve.
Blower wheel rubbing on oven baffle.
Blower wheel loose on motor shaft.
Defective motor.
Defective COOK/COOL DOWN switch.
Defective door switch.
Door switch out of alignment.
Faulty wiring.
SOLUTION
Adjust pilot flame length.
Replace thermocouple.
Replace flame safety tap.
Replace flame safety tap.
Adjust tension.
Replace spring.
Replace.
Adjust tension.
Replace door.
Level and tighten.
Replace.
SOLUTION
Adjust bypass or replace thermostat.
SOLUTION
Check power supply
Replace switch.
Check condition of wires and
connections.
Replace switch.
Replace switch.
Align switch.
Close door.
Check condition of wires and
connections.
Replace motor.
Defective thermostat.
Replace solenoid.
Adjust blower wheel.
Tighten blower wheel.
Replace motor.
Replace switch.
Replace switch.
Align switch.
Check condition of wires and
connections.
Part # 4519069 (07/24/09)