Loading ...
Loading ...
Loading ...
21
Operating Instructions and Owner’s ManualMr. Heater Series Heater
SECTION 9: Troubleshooting Guide. Mr. Heater
START
Turnonthermostat
Doesblowerturn
on?
Yes
Doestheigniter
warmupandglow
red?
Yes
No
CheckThermostat
andWiring.Isthe
powersupplytounit
115V?
No
Findthesource
oftheelectrical
problem
CheckLEDindicatoronSmartValvefor
indicationoffault.RefertoSmartValvetesting
onpage20todetermineproblem.
No
Istheairintakeor
exhaustblocked?
Yes
RemoveObstruction
Checkwiringand
connections
No
Istheignitor
damaged?
No
Checkvoltageat
ignitor.Isit115V
duringignition
cycle?
Yes
Isblowersidedoor
inplace?
No
Replacedoor
No
Checkwiringand
hoseconnectionto
airswitch.Arethey
OK?
Yes
Isthevoltageat
thetransformer
secondary24V?
No
Isthevoltageatthe
transformerprimary
115 V
Replaceignitor.
Yes
No
Istheresistance
throughigniter40
to75ohms?
Removedoor.Is
voltageatdoor
switch115V?
Yes
No
Checkvoltageat
gasvalve.
Checkfor115VtransformerinputatplugC3
onSmartValve.Checkfor115Voutputof
C3.Ifnooutputvoltageispresentreplace
SmartValve.
Replacewiringand/
orhoseconnection.
No
Jumperwiresat
pressureswitch.
Doestheignitor
glowred?
Yes
ReplacetransformerYes
Checkwire
connections.
Yes
Depressswitch.
Doesblowercome
on?
Yes
Yes
No
Checkvoltageto
motor.Isit115V?
Yes
Istheblowerfan
obstructed?
No
Replaceblower
motor.
Replacepressure
switch.
Yes
ReplaceSmartValve.
No
CheckLEDindicatoronSmartValvefor
indicationoffault.RefertoSmartValvetesting
onpage21todetermineproblem.
Checkdoorfit.If
damaged,replace
door.
Replaceswitch.
No
Removeobstruction
Yes
Afterignitorwarm-
upperiod,doesthe
valveclick?
Yes
Doestheburner
light?
Yes
Doestheburner
stayon?
Yes
Doestheburner
rununtilthecall
forheatends?
Ifaproblemstillexists,contactMr.Heater,IncTechnicalProductsCustomer
Service1-866-447-2194
No
TheSmartValvechecksthestatusoftheblowerprovingswitchcontactsmustseeachangeinthe
contactwitheveryfiringcycle.Placingajumperattheswitchoutofsequencewillresultinafaultwith
theLEDindicatorflashingtwotimes.
Werethegaslinespurgedofair?
No
No
Yes
Checkinletgaspressure.Ispressurecorrect?
Refertopage40forcorrectpressureforunit.
Yes
Checkinletgasshutoff.Adjustregulator.
Contactgassupplier
Isthecontinuityof
thegroundwire
OK?
No
Theswitchonthegasvalvemustbeintheon
positionandthelinepurgedofair.
No
Repairwiring.
No
Checkthecontinuityofthegroundwire.
Checkthethermostat.
Checkoutletgaspressureduringignitioncycle.
Isthepressure3.5”w.c.fornaturalor10.5”
w.c.forlp?
Yes
Adjusttoproperpressure.
No
AreL1andL2
reversed?
Yes
Yes
Repairwiring
Isthewiringatthe
SmartValveOK?
No
Repairwiring
Istheinsulationon
thesensorleadOK?
No
Repairwiring
No
Yes
Yes
Arethewiresto
theSmartValveOK?
Yes
ReplaceSmartValve
No
Replace/repairwires.
Yes
Checkforproper
burnerorificeand
airplate.
Isthesensor
positioned
properly?
Yes
Isthesensordirty?
No
ReplaceSensor
No
Repair/Replace
Yes
Cleansensor.
Afaultindicationofsixflashesmayindicate
thattheflamesensingcircuitisnotfunctioning
properly.Performthefollowingseriesofchecks
tocorrecttheproblem.
No
Loading ...
Loading ...
Loading ...