Table of Contents
Advertisement
Troubleshooting
Troubleshooting Guide
Error Code
Error
E44/F26
Increase in water
temperature is slow.
E45/F8
Actuator relay K3
stuck.
E46/F8
Actuator relay K4
stuck.
E47/F8
Actuator relay K5
stuck.
E48/F8
Actuator relay K6
stuck.
E49/F8
Actuator relay K7
stuck.
E50/F25
Moisture on the control
board.
E51/F6
Relay calibration
invalid.
E52/F10
Water tank leaking.
E53
RTC calibration invalid.
E54/F7
Actuator, relay board
locked.
E55
Program control data
invalid.
827703 REV B.1
Possible Cause
Test/Action
For SO24:
1
2
3
Defective evaporator
1
heater.
2
Temperature sensor
3
100C temperature
limiter is not resetting.
4
Defective level
measure pin.
Element or relay board
1
damaged.
2
3
Element or relay board
1
damaged.
2
3
Element or relay board
1
damaged.
2
3
Element or relay board
1
damaged.
2
3
Element or relay board
1
damaged.
2
3
Room air fan not
1
working.
2
3
Steam leak.
4
Replace the relay board.
Water valve not tight.
1
2
Defective or damaged
3
water sensing system.
4
Replace the relay board.
Error E43 to E49
1
acknowledged 10
2
times. Relay board
stays blocked for
safety.
Error only occurs
1
during operation.
2
87
CSO (SWS #13543126)
Check the wiring to all elements.
Measure the resistance of the bake element and
the convection element.
Replace the relay board.
Check the resistance of the evaporator heater.
Check the resistance of the temperature sensor
100C.
Replace the evaporator, temperature sensor
100C, and level measure pin.
Replace the control board.
Check the resistance of the element.
Check the resistance of the element to ground.
Replace the relay board.
Check the resistance of the element.
Check the resistance of the element to ground.
Replace the relay board.
Check the resistance of the element.
Check the resistance of the element to ground.
Replace the relay board.
Check the resistance of the element.
Check the resistance of the element to ground.
Replace the relay board.
Check the resistance of the element.
Check the resistance of the element to ground.
Replace the relay board.
Check the operation of the room air fan.
Check the resistance of the room air fan.
Check for a steam leak from the door, gasket, and
exhaust duct.
Replace the control board.
Inspect the water valve.
Inspect the water tank.
Inspect the water sensing system.
Replace the control board.
Replace the relay board.
After replacing the relay board, determine the
reason for error E43 to E49.
Turn the power to the unit off and then back on
again. Run unit again.
Replace the control board.
service.subzero.com
Advertisement
Table of Contents
