Faultsymptom Indicators Possiblecause Correctiveaction
Forunits withelectric heater: Check that the
airflow is correct. Resetthe circuitbreakers
and the high temperature cut-out.
Theair flow is too low. One
ofthehigh temperature
cut-outshastripped,either
due to an obstruction in the
reactivationairfloworbecause
the reactivationairflow hasbeen
settoolow.
For units withgas heater: Check that the
airflow is correct. Resetthehightemperature
cut-out.
Broken PT1000 sensor. Check that thesensor isworking.
–ReactHeaterHTCO
Powerfailure. Check the powersupply to theunit.
Theunithasstopped.
–ReactHeaterFault Reactivationheatererror. ContactMuntersService.
The yellow alarm lamp onthe
controlpanelis lit. Thefollowing
textis shown on the display:
–React Filter 1 Reactivationfilterclogged. Changethe filter and resetthe alarm.
–React Filter 2 Reactivationfilterclogged. Changethe filter and resetthe alarm.
–Process PreFilter1 Processfilterclogged. Change the filterand reset thealarm.
–Process PreFilter2 Processfilterclogged. Change the filterand reset thealarm.
–HumidityDeviationAlarm Thehumidityexceedsthe
setpoint. This is probably due
tosomeother fault in the unit or
temporaryexcessivehumidityin
the space.
Resetthealarm.
–Temperature Deviation Alarm No cooling/heatingmedium
supplytocoils,unusualheat/cool
load (openwindow,too much
people).
Verifymedium supply
–Service message Preset datafor date and/or
operatinghours for nextservice
haspassed.
ContactMuntersservice.
Yellow alarmwhen theunitisin
operation.
–React HeaterGasLow Forunits withgas burner: Gas
pressureistoolow.
Check the gassupplyuptothe unit.
Reactivation andprocess
airflowsdonotcorrespondtothe
ratedairflows.
Checkandadjust thereactivationandprocess
airflow,seethebasicmanualfortheunit.
The unit is runningbut is not
reducingthehumidity.
–Humidity Deviation
The humiditytransmitter isnot
working properly.
Checkthatthehumiditytransmitterworks
properly andis correctlyconnectedas
describedintherecommendations.
46
Faulttracing
190TEN–1089–G1412
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