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Error Code
Error
Possible Cause
Test/Action
2
Measure the resistance of the stepper motor.
3
Replace the stepper motor.
4
Replace the relay board.
E87/F4
Slider blocked.
Slider path restricted
during operation.
1
Slider blocked with grease.
2
Slider mechanism is too tight. Replace the slider.
E88
Slider in stop position.
Slider path restricted
during operation.
1
Slider blocked with grease.
2
Slider mechanism is too tight. Replace the slider.
E89/F18
Communication
interruption - inverter.
Not applicable to Wolf products.
E90/F18
The temperature
reading of the inverter
heat sink is defective.
Not applicable to Wolf products.
E91/F18
Temperature
measurement of
magnetron defective.
Not applicable to Wolf products.
E92/F18
Magnetron heating coil
defective.
Not applicable to Wolf products.
E93/F18
Defective microwave
anode distance
system.
Not applicable to Wolf products.
E94/F19
Inverter hardware
defective.
Not applicable to Wolf products.
E95/F18
Insufficient cooling of
magnetron.
Not applicable to Wolf products.
E97
Operating system:
Watchdog control
board.
Replace the control board.
E98
Operating system:
Watchdog relay board.
Replace the relay board.
E99
Operating system:
ASSERT control board.
Moisture on control
board.
1
Inspect the control board for moisture.
2
Replace the control board if the error continues.
E100
Operating system:
ASSERT relay board.
Moisture on relay
board.
1
Inspect the relay board for moisture.
2
Replace the relay board if the error continues.
E101/F30
No communication
with control board.
1
Inspect the connection between the relay board
and control board.
2
Replace the control board.
3
Replace the relay board.
E102/F30
No communication
with relay board.
1
Inspect the connection between the relay board
and control board.
2
Replace the relay board.
3
Replace the control board.
E103/F31
Operating system:
Communication
between relay board
and control board is
incompatible.
Software version of
relay board and control
board incompatible.
1
Reload the software.
2
Replace the control board and relay board.
E104/F31
Operating system:
CORE incompatible.
Reload software.
E105
Operating system:
NVRAM-FLASH-PAGE
write error.
Moisture on control
board.
1
Inspect the control board for moisture.
2
Replace the control board if the error continues.
E106
Operating system:
NVRAM-FLASH-PAGE
delete error.
Moisture on control
board.
1
Inspect the control board for moisture.
E Series SO24 (SWS 13543126)
Troubleshooting
Troubleshooting Guide
service.subzero.com
827705 REVA 01/2019
54