9 Error messages and troubleshooting
88 BA6820378-03 EN
Green
LED
Yel-
low
LED
Red
LED
Status messages Action
The device is in regener-
ation mode
Regeneration being re-
peated
Forced regeneration
RTC battery voltage too
low
Replace battery [►Section 9.4,
Page 90] (CR2032)
Table7: Status messages
= LED OFF
= LED ON
= LED FLASHING
9.3 Fuse
If the fuse fails again, please consult MR Service & Complaint
[►Section 9, Page 83]. A device version is available that elimi-
nates the occurrence of overvoltages. Overvoltage protection
can be retrofitted by replacing a circuit board.
A fine-wire fuse is installed on the circuit board in the terminal box to protect
the control electronics. This can be replaced by a replacement fuse (see
[►Section 12.1, Page 103]) if needed.
In order to replace the fuse, proceed as follows:
1. De-energize the dehydrating breather.
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