Trouble­shooting - Mr. Heater MH125KTFR Operating Instructions And Owner's Manual

DIAGNOSTIC SAFETY SHUTDOWN AND TROUBLE SHOOTING
FAULT
Motor­does­not­start­and­no­ignition
Motor­starts­no­ignition­or­cuts­out
Motor­starts,­heater­emits­smoke
Heater­does­not­stop
ERROR CODE
E1
E2
E3
E4
E5
E6
E7
DEFAULT T-STAT SETTING
68°F
Mr. Heater, Inc. | Kerosene Fired Radiant Heater
CAUSE
No­electrical­current
Wrong­setting­on­thermostat
Defective­motor
Not­enough­fuel­at­the­burner
Electronic­igniter­defective
Flame­control­box­defective
Photocell­defective
Solenoid­defective
Not­enough­combustion­air
Fuel­contaminated­or­contains­water
Air­leaks­in­fuel­circuit
Not­enough­fuel­at­burner
Too­much­fuel­at­burner
Solenoid­defective
LED DIAGNOSTIC READ OUT TABLE
DESCRIPTION
Ignition­failed­or­flame­out
Temperature­sensor­malfunction
High­limit­switch­over­heat
Flame­control­malfunction
Solenoid­monitor­malfunction
Phot­cell­fault
Motor­speed­fault
T-STAT RANGE
41°F­-­99°F
5
Operating Instructions and Owner's Manual
SOLUTION
Check­power­supply­(is­it­plugged­in?)
Check­proper­position­of­the­switch­(is­it­on?)
Check­fuse/breaker
Check­for­setting­of­thermostat­higher­than­room­
temp.
Replace­Motor
Ensure­an­adequate­level­of­fuel­is­in­the­tank.
Cycle­unit­a­few­time­to­allow­fuel­to­fill­the­filter­
and­fuel­system.­
Check­fuel­lines­including­filter­for­leaks.
Clean­or­replace­nozzle.
Check­igniter­connections­including­transformer
Check­electrodes­for­corrosion­and­carbon­build­up.
Replace­transformer
Replace­flame­control­box
Clean­or­replace­photo­cell
Check­connections
Replace­solenoid
Make­sure­Air­inlet­and­outlet­are­free
Clean­burner­disc
Drain­fuel­in­tank­and­replace­with­clean­fuel
Clean­or­replace­fuel­filter
Check­fuel­lines­and­system­for­possible­leaks
Clean­or­replace­fuel­nozzle
Replace­nozzle
Replace­solenoid