7. Other information
106082
– MRF-M2 -E - V0.7 - 23.04.2021
Page 33
7.
Other information
7.1 Fault messages
°C
T 1
T 2
T1
T2
OFF
SET
Any faults that occur are displayed in cooling mode. The display then alternates be-
tween temperature and error code. Optionally, the error codes can be sent by SMS
or email.
The fault messages F20 | F30 | F53 can be confirmed without stopping cooling. (Fault
message is no longer displayed).
For all remaining fault messages, the respective fault must be eliminated in order to
reset the message.
Display
Fault
F20
Maximum compressor run time
F30
Power failure in cooling
When switching on again, it was found that the regulator was in
cooling mode before the power interruption.
F53
Compressor failure
F56
Sensor short circuit
The sensor or sensor cable is faulty and must be replaced or re-
paired. Parameter [C91] 'Actual value correction' must then be ad-
justed at programming level.
F57
Broken sensor
The sensor or sensor cable is faulty and must be replaced or re-
paired. Parameter [C91] 'Actual value correction' must then be ad-
justed at programming level.
F58
Exceeding the measuring range
The sensor fitted can only measure temperatures between -20˚
and +70°C.
F77
Lid open in cooling mode
The lid of the milk cooling vat was opened in cooling mode.
