Computer Control Models Only - Wolf WKG SERIES Service Manual

SYMPTOMS
Normal (Roast) mode OK, no Hold mode.
(Roast & Hold models only).
Component cooling Fan does not run.
Uneven Cooking.
Intermittent problems.
No power to temperature control.
SYMPTOM
Oven does not heat.
High limit thermostat shutting off gas
burner.
Oven not hot enough.
Error Codes
In the display window, the error code will alternate between the code and the oven cavity temperature or dashes if
the oven is calling for heat (heat light on). When the condition causing the error is resolved, normal oven operation
can resume.
NOTE: To check a SETUP PARAMETER and its corresponding DATA VALUE, see SETUP MODE under
COMPUTER CONTROL (WKGC/WKGCX).
NOTE: If the cause of the error is not apparent, check for these conditions as they may also cause errors to occur:
Electrical noise or a noise event, excess environmental moisture or temperature, or vibration.
CODE & PROBLEM
Er01 - ROM checksum error
Er02 - RAM checksum error
Er03 - Ambient sensor error
Er04 - Configuration error
Er05 - EEprom error
FULL SIZE GAS CONVECTION OVENS - TROUBLESHOOTING

COMPUTER CONTROL MODELS ONLY

1.
2.
3.
1.
2.
1.
2.
3.
PROBABLE CAUSE
Internal ROM malfunction
Internal RAM malfunction
Ambient temperature is below 32EF
Microprocessor malfunction
Power loss while storing data
POSSIBLE CAUSES
1. Roast and Hold switch (S3) malfunction.
2. R2 hold relay malfunction.
3. Roast & Hold timer malfunction.
4. Interconnecting wiring malfunction.
1. Motor inoperable.
2. Interconnecting wiring malfunction.
1. Convection Fan motor speed/direction.
2. Poor combustion.
A. Gas pressure incorrect.
B. Exhaust vent plugged or obstructed.
C. Snorkel Vent plugged or obstructed.
3. Air flow Baffles missing or damaged.
1. High ambient temperatures.
2. Wiring connections loose.
3. Cooling fan malfunction.
1. Power switch (S1) in OVEN COOL.
2. Door or door switch open.
POSSIBLE CAUSES
High limit switch open.
Probe malfunction.
Control malfunction.
Probe malfunction.
Control malfunction.
Probe malfunction.
Control range high (rH1) setting to low. See SETUP MODE
under COMPUTER CONTROL (WKGC, WKGCX).
Control malfunction.
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SOLUTION
Cycle power
Cycle power
Check ambient temperature at the
control.
Cycle power
Cycle power
F32700 (February 2006)