Honeywell CM737 - Holiday Function

11
TROUBLESHOOTING THE CM737
ENG
Symptom Possible Cause Remedy
Aashing
symbolappearson
thedisplaywithinone
minuteoftheCM737
beingpoweredon.
TheCM737receivespower
supplyfromtheheating
appliance,butnoinformation.
1)TheCM737isnotconnectedto
thecorrectterminalsoftheheating
appliance.Checkifthewiringiscon-
nectedtotheOpenThermconnection
terminalsoftheheatingappliance.
2)Theheatingapplianceisnotcong-
uredcorrectly.Contactyourinstaller.
A symbol
appearspermanently
(notashing)onthe
display.
Communicationerrordueto
aninterruptorshortcircuitin
thelinkbetweentheheating
applianceandtheCM737.
1)Checkifthepowersupplycableof
theheatingapplianceisconnected.
2)Checkthewiring.
3)Contactyourinstaller.
Displayisblank. AfterinstallingtheCM737
nopowertotheheating
applianceissuppliedandthe
rechargeablebatteryhasn’t
beencharged(takesmax1hr
untilfullycharged).
Checkifthepowersupplycableof
theheatingapplianceisconnected-
otherwisecontactyourinstaller.
Thepowersupplyor
thecommunicationlink
betweentheCM737andthe
heatingappliancehasbeen
interruptedformorethan8hrs.
Checkifthepowersupplycableof
theheatingapplianceisconnected.
Afterthepowerisrestoredthetime
mayneedtobeadjusted-otherwise
contactyourinstaller.
Aashing
symbolappears
onthedisplayafter
theCM737being
operatingforaperiod
oftime.
Theheatingapplianceis
showinganerror
Whenyoupressthe button,youwill
probablyseeanerrorcode.Thisfault
codedependsonthetypeofheating
appliance.Checkthemanualofthe
heatingapplianceformoreinforma-
tionorcontactyourinstaller.
Aashing
symbolappearson
thedisplayandthe
roomtemperatureis
replacedby“--”
Internalfaultinthe
temperaturemeasuringcircuit
Contactyourinstaller.