MH70KFR OPERATING INSTRUCTIONS AND OWNER’S MANUAL

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Mr. Heater, Inc. | Kerosene Fired Radiant Heater Operating Instructions and Owner’s Manual

DIAGNOSTIC SAFETY SHUTDOWN AND TROUBLE SHOOTING

FAULT CAUSE SOLUTION

Motordoesnotstartandnoignition

Noelectricalcurrent

Checkpowersupply(isitpluggedin?)

Checkproperpositionoftheswitch(isiton?)

Checkfuse/breaker

Wrongsettingonthermostat Checkforsettingofthermostathigherthanroom

temp.

Defectivemotor ReplaceMotor

Motorstartsnoignitionorcutsout

Notenoughfuelattheburner

Ensureanadequateleveloffuelisinthetank.

Cycleunitafewtimetoallowfueltofillthefilter

andfuelsystem.

Checkfuellinesincludingfilterforleaks.

Cleanorreplacenozzle.

Electronicigniterdefective

Checkigniterconnectionsincludingtransformer

Checkelectrodesforcorrosionandcarbonbuildup.

Replacetransformer

Flamecontrolboxdefective Replaceflamecontrolbox

Photocelldefective Cleanorreplacephotocell

Solenoiddefective

Checkconnections

Replacesolenoid

Motorstarts,heateremitssmoke

Notenoughcombustionair

MakesureAirinletandoutletarefree

Cleanburnerdisc

Fuelcontaminatedorcontainswater

Drainfuelintankandreplacewithcleanfuel

Cleanorreplacefuelfilter

Airleaksinfuelcircuit Checkfuellinesandsystemforpossibleleaks

Notenoughfuelatburner Cleanorreplacefuelnozzle

Toomuchfuelatburner Replacenozzle

Heaterdoesnotstop Solenoiddefective Replacesolenoid

LED DIAGNOSTIC READ OUT TABLE

ERROR CODE DESCRIPTION

E1 Ignitionfailedorflameout

E2 Temperaturesensormalfunction

E3 Highlimitswitchoverheat

E4 Flamecontrolmalfunction

E5 Solenoidmonitormalfunction

E6 Photcellfault

E7 Motorspeedfault

DEFAULT T-STAT SETTING T-STAT RANGE

68°F 41°F-99°F

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OPERATING INSTRUCTIONS AND OWNER’S MANUAL - Page 5