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Problem Solving
The Problem Solving section is intended to aid in defining and correcting possible service problems. When
using the chart, select the problem category that resembles the malfunction. Then proceed to the possible
causes category and take necessary corrective action.
Problem
Probable Causes
Corrective Action
The cycle light does
The furnace is not connected to
Check furnace connection
not illuminate.
power supply.
to power source.
ON and OFF power switch is
Replace power switch.
defective.
Door switch defective.
Realign door strike or
replace door safety switch.
Incorrect power source.
Check power source.
Defective circuit breaker.
Replace circuit breaker.
The furnace does not heat.
No power.
Check power source and fuses or
breakers.
Defective electrical hookup.
Repair electrical hookup.
Thermocouple has oxidized
Replace thermocouple.
and opened the circuit.
Controller malfunction.
Contact customer service.
Two or more heating elements
Replace defective elements.
burned out.
Door switch malfunction.
Realign door strike or replace door
safety switch.
Defective safety relay.
Replace safety repay.
Defective solid state relay (SSR)
Replace SS relay.
