Whirlpool KRFC704FSS - Service Diagnostics and Testing

For Service Technician Use Only
DIAGNOSTICS
1-20
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French-Door Boom Mount Refrigerator
Diagnostics

• Keep both “—” and “—” buons pressed for 3 seconds or [ ]
and [ ] buons.
• Countdown will display and a chime will play upon entry into
Service mode.

Service mode requirement Button on Main UI
Enter Service Key Combinaon “—” and “—” temperature
buons pressed for 3 seconds
Enter Key for Navigaon “Drawer” buon
Increment Key for Navigaon “+” buon on the upper
7 segment display
Decrement Key for Navigaon “-“ buon on the upper
7 segment display
Back Key for Navigaon “Max Cool” buon
Degree C LED Indicator “°C” indicator
Degree F LED Indicator “°F” indicator

To Exit Service diagnoscs, use “Max Cool” Key to back out of
funconal test. Press and hold “-” and “-” temperature buons
simultaneously for 3 seconds.
NOTE: If a test or mode runs over “99” on the display, the User
Interface will ash digit 1 for one second, and then display digit 2.
The number will display. i.e. “100” will display “1” rst for one
second, then display “00”. “101” will display “1” rst for one
second, and then display “01”, etc.

Service Test - 00 Exit Service Mode:
• This step is an alternave method to exit service mode and
return to Normal Operaon.
Service Test - 01 RC Thermistor
• Read RC compartment Temperature. SH indicates “shorted”
thermistor, OP indicated “open” thermistor.
Service Test - 02 FC Thermistor
• Read FC compartment Temperature. SH indicates “shorted”
thermistor, OP indicates “open” thermistor.
Service Test - 03 RC Evaporator Thermistor
• Read Refrigerator Evaporator Temperature. SH indicates
“shorted” thermistor, OP indicates “open” thermistor.
Service Test - 04 First FC Evaporator Thermistor
• Read Freezer Evaporator Temperature. SH indicates “shorted”
thermistor, OP indicates “open” thermistor.
Service Test - 05 Pantry Thermistor
• Read Pantry compartment Temperature. SH indicates
“shorted” thermistor, OP indicates “open” thermistor.
Service Test - 14 Door Ice Box Thermistor
• Read RC compartment Temperature. SH indicates “shorted”
thermistor, OP indicates “open” thermistor.
Service Test - 16 Door Ice Maker Tray Thermistor
• Read Icemaker Tray C Temperature. SH indicates “shorted”
thermistor, OP indicates “open” thermistor.
Service Test - 17 Freezer Ice Maker Tray Thermistor
• Read Freezer Icemaker Tray Temperature. SH indicates
“shorted” thermistor, OP indicates “open” thermistor.
Service Test - 18 Second FC Evaporator Thermistor
• Read Freezer Evaporator Temperature. SH indicates “shorted”
thermistor, OP indicates “open” thermistor.
Service Test - 23 RC Maximum Temperature; Service
Test - 24 FC Maximum Temperature; Service Test - 25
Pantry Maximum Temperature; Service Test - 26 Ice
Box Maximum Temperature
• Maximum temperature reached during the last 6 hours of
operaon. Temperature is saved every hour, keeping the last 6
hours for analysis. The maximum is displayed on the UI screen
from the last six saved values.
Service Test - 28 RC Average Temperature; Service
Test- 29 FC Average Temperature; Service Test - 30
Pantry Average Temperature; Service Test - 31 Ice Box
Average Temperature
• Average temperature during the last 6 hours of operaon.
Average is calculated using a running average lter.
Service Test - 33 RC Minimum Temperature; Service
Test - 34 FC Minimum Temperature; Service Test - 35
Pantry Minimum Temperature; Service Test - 36 Ice Box
Minimum Temperature
• Minimum temperature reached during the last 6 hours of
operaon. Temperature is saved every hour, keeping the last 6
hours for analysis. The minimum is displayed on the UI screen
from the last 6 saved values.
Service Test - 38 Compressor Speed Change without
Ramp
• Control the compressor speed. When entering service test,
the compressor goes o if it was previously on.
• Change the compressor duty cycle between 0 and the
maximum compressor speed by pressing “+” to increment
and “-” to decrease the speed.
• For Linear Compressors there is a compressor protecon
against shung the compressor o for 2½ minutes aer
changing to the ON state. Therefore the compressor will run
for 2½ minutes aer changing the speed.