TROUBLESHOOTING
7-3
Troubleshooting Procedures
After determining the problem condition, proceed through the Probable Causes
and corresponding Corrective Actions in the order shown in the troubleshooting
table. If a Probable Cause is not the reason for the fault condition, proceed to
the next Probable Cause and Corrective action. Continue through the Probable
Causes until the problem is corrected.
(Revised 1/02)
PROBLEM: NO SERVICE CODE DISPLAYED
Probable Cause
Corrective Action
Relay board or control panel not
operating properly.
Perform power supply checks. See page 8-3.
PROBLEM: UNIT WILL NOT TURN ON
Probable Cause
Corrective Action
Oven disconnected from power source.
Improper input power connection(s).
Blown fuse(s) in oven.
Fuses continue to blow.
Air or boiler high limit
temperature thermostat problem.
Make sure disconnect device is turned on. If necessary,
reset power source circuit breaker. If disconnect device has
a blown fuse, ask the customer to make arrangements to
replace the fuse.
Refer to schematic diagrams and check for correct power
connection. If necessary, notify the customer that an elec-
trician is needed to correct the problem.
WARNING
Be sure oven is disconnected from branch cir-
cuit power before performing any repair work.
Check all fuses and replace blown fuse(s).
Refer to the schematic diagram (pages 2-17, 3-33, 3-34,
4-19 or 5-19) and continuity check for electrical short
circuits.
Test thermostats. See page 8-4.
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