JUMO 701150 14597 safetyM STB/STW - Safety Temperature Limiter and Safety Temperature Monitor Operating Manual - Manual (Page 106)

11 Error messages 2014-05-01 106
Footnote 1 If the error cannot be acknowledged despite repeated switching off and on,
the device must be repaired by JUMO.
h Return the device
v Chapter 2.4 "Service addresses"
Error display (Err) Origin Cause/remedy