Troubleshooting Circuit Test Chart; Touch Panel And Relay Control Board Tests - Whirlpool SPEEDCOOK GH6208 XR Technical Education

TROUBLESHOOTING CIRCUIT TEST CHART

Cooking Mode Magnetron
Microwave only On
Convection
Grill
Microwave and On
Grill
Combination
Microwave and On*
Convection
Combination
*Magnetron and convection elements turn on alternately, not simultaneously.
NOTE: After convection or grill elements are on, the cooling fan and hood exhaust fan may be on for up to 10 minutes for
cooling.

TOUCH PANEL AND RELAY CONTROL BOARD TESTS

To access the test mode:
1. Unplug microwave oven or disconnect power.
2. Open the microwave oven door.
3. Press and hold OFF/CANCEL.
4. Plug in microwave oven or reconnect power.
5. Release OFF/CANCEL and close microwave oven door.
NOTE: If the OFF/CANCEL key is pressed during this
diagnostic routine, you will exit the test mode.
Test Mode Table
Screen Display
UIB SW ver
PB SW Ver Flash
FC thermistor (ºC)
UIB thermistor (ºC)
Magnetron thermistor (ºC)
Convection
Element Grill Elements
On
On*
Display Explanation
Version number of UIB (user
interface board) software
Version number of power board
(relay control board) software
The temperature (ºC) measured
by FC (forced convection)
thermistor—maximum 250ºC
The temperature (ºC) measured
by UIB (user interface board)
thermistor—ranges +/- 5ºC
above/below room temperature
if oven has not been used
recently
The temperature (ºC) measured
by magnetron thermistor—
maximum 125ºC
Cooling Fan
On
On
On On
On On
On
Screen Display
HUM PWM
Hood Key
Touch panel board
EEPROM
MW reply error
Smps FB error
Hum sensor error
Cavity thermistor error
Magnetron thermistor error Magnetron thermistor error
EEPROM error
6-2
Hood Exhaust
Convection Fan Fan
On On
On
On
On On
Display Explanation
Humidity level inside unit—
ranges between 8,000 and
9,500, depending on humidity
level in oven cavity
Hood key number
Touch panel error
Version number of PB (relay
control board) EEPROM
(Electrically Erasable
Programmable Read-Only
Memory)
MW relay error
Power board (relay control
board) error
Humidity sensor error
Cavity thermistor error
Power board (relay control
board) error