Munters MCS300, User Manual

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MCS300
6.3 Fault tracing list
Go through the following fault tracing list below before contacting Munters’ product service department.
The list provides help in identifying types of faults that are easy to remedy without the assistance of specially
trained personnel
Fault symptom Possible Cause Corrective action
On-off switch turned off by mistake. Place the on-off switch in the on position and check that
dehumidifier starts.
No mains power to unit. Check mains power to unit.
Dehumidifier switched to automatic mode
by mistake with no humidistat connected.
Set the operating mode to manual mode and check that the
dehumidifier starts.
Set the operating mode to manual mode and check that the unit
starts. If the unit starts, the humidistat is probably at fault.
Unit has stopped.
Humidistat fault (automatic modes).
Check the humidistat by seeing if the dehumidifier starts
when the humidistat setpoint is reduced. Reset the humidistat
setpoint after the check. Calibrate the humidistat if necessary.
Dehumidifier has stopped
and fault indication is
blinking.
Thermostat for reactivation heater has
tripped.
Contact Munters’ product service department.
Dehumidifier is running
and constant fault
indication.
Warning for abnormal reactive temperature
increase.
Check that filters and ducting for incoming air are not blocked by
foreign objects or plugged by dirt. Increase reactivation air flow
by slowly opening the damper.
Airflows are faulty. Check ducting and filters for blockage and leakage. Dehumidification
capacity has diminished.
Humidistat not functioning properly
(automatic modes)
Check humidistat function and calibrate as required. Contact
Munters product service department.
Table 6.1 Fault tracing list
190TEN-1027- F1404
Fault tracing
18