Desa RM100LP owner manual Troubleshooting, Observed Fault Possible Cause Remedy

Page 6

100,000 Btu/Hr

PROPANE CONSTRUCTION HEATER

TROUBLESHOOTING

Note: For additional help, visit DESA International’s Technical Service web site at www.desatech.com.

WARNING: Never service heater while it is plugged in, connected to propane supply, operating, or hot. Severe burns and electrical shock can occur.

OBSERVED FAULT

POSSIBLE CAUSE

REMEDY

Fan does not turn when heater is

1.

No electrical power to heater

1.

Check voltage to electrical outlet. If voltage is

plugged in.

 

 

 

good, check heater power cord for breaks.

 

2.

Fan hitting inside of heater shell

2.

Adjust motor/fan mount to keep fan from hitting

 

 

 

 

inside of heater shell. Bend fan mount if necessary.

 

3.

Fan blades bent

3.

Replace fan. See Fan, page 7.

 

4.

Defective motor

4.

Replace motor. See Motor, page 7.

Heater will not ignite

1. User did not follow installation or

 

operation instructions properly

 

2. No spark at ignitor. To test for spark,

 

follow step 8 under Ignitor, page 8. If

 

you see spark at ignitor, have heater

 

serviced by qualified service person.

 

If no spark seen:

 

A) Loose or disconnected ignitor wire

 

B) Wrong spark gap

 

C) Bad ignitor electrode

 

D) Bad spark transformer

1.Repeat installation and operation instructions. See Installation, page 4 and Operation, page 5.

2.A) Check ignitor wire. Tighten or reattach loose ignitor wire. See Figure 10, page 8 for ignitor wire location.

B)Set gap between ignitor electrode and target plate to .13"/.15".

C)Replace ignitor electrode. See Ignitor, page 8.

D)Replace spark transformer. See Spark Transformer, page 8.

Heater shuts down while running.

1.

Propane supply may be inadequate

1.

A) Refill tank.

 

 

 

 

B) Provide additional and/or larger tanks. See

 

 

 

 

Propane Supply, page 4.

 

2.

High surrounding air temperature

2.

This can happen when running heater in

 

 

causing thermal limit device to shut

 

temperatures above 85°F. Run heater in cooler

 

 

down heater.

 

temperatures.

 

3.

Restricted air flow

3.

Check heater inlet and outlet. Remove any

 

 

 

 

obstructions.

 

4.

Damaged fan

4.

Replace fan. See Fan, page 7.

 

5.

Excessive dust or debris in surrounding

5.

Clean heater. See Maintenance, page 5.

 

 

area

 

 

 

 

 

 

 

 

 

 

 

WARNING: Use only in areas free of

 

 

 

 

high dust content.

 

 

 

 

 

www.desatech.com

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Contents Propane Construction Heaters Safety Information Propane Construction HeaterProduct Identification UnpackingTheory Operation Installation Propane SupplyVentilation To Start Heater MaintenanceStorage To Stop HeaterTroubleshooting Observed Fault Possible Cause RemedyService Procedures MotorFAN Spark Transformer AccessoriesTechnical Service IgnitorSpecifications Replacement PartsWiring Diagram Illustrated Parts Breakdown Parts List KEY Part Number Description QTYWarranty Service Warranty and Repair ServiceKeep this Warranty Limited Warranty Repair Service

RM100LP specifications

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