Desa Tech RFN28TD installation manual Troubleshooting, Observed Problem Possible Cause Remedy

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15,000 TO 28,000 BTU/HR VENT-FREE NATURAL GAS HEATER

TROUBLESHOOTING

Note: All troubleshooting items are listed in order of operation.

WARNING: Turn off and un- plug heater and let cool before servicing. Only a qualified ser- vice person should service and repair heater.

CAUTION : Never use a wire, needle, or similar object to clean ODS/pilot. This can damage ODS/ pilot unit.

 

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

When ignitor button is pressed, there is no

1.

Ignitor cable pinched or wet

1.

Free ignitor cable if pinched by any

 

spark at ODS/pilot

 

 

 

metal or tubing. Keep ignitor cable dry

 

 

2.

Ignitor electrode not connected to igni-

2.

Reconnect ignitor cable

 

 

 

tor cable

 

 

 

 

3.

Piezo ignitor nut is loose

3.

Tighten nut holding piezo ignitor to base

 

 

 

 

 

panel of log set. Nut is located behind

 

 

 

 

 

base panel.

 

 

4.

Broken ignitor cable

4.

Replace ignitor cable

 

 

5.

Ignitor electrode broken

5.

Replace ignitor

 

 

6.

Bad piezo ignitor

6.

Replace piezo ignitor

 

 

7.

Ignitor electrode positioned wrong

7.

Replace ignitor

 

 

 

 

 

 

 

When ignitor button is pressed, there is

1.

Gas supply turned off or manual shutoff

1.

Turn on gas supply or open manual

 

spark at ODS/pilot but no ignition

 

valve closed

 

shutoff valve

 

 

2.

Control knob not in PILOT position

2.

Turn control knob to PILOT position

 

 

3.

Control knob not pressed in while in

3.

Press in control knob while in PILOT

 

 

 

PILOT position

 

position

 

 

4.

Air in gas lines when installed

4.

Continue holding down control knob.

 

 

 

 

 

Repeat igniting operation until air is re-

 

 

 

 

 

moved

 

 

5.

ODS/pilot is clogged

5.

Clean ODS/pilot (see Cleaning and

 

 

 

 

 

Maintenance, page 15) or replace ODS/

 

 

 

 

 

pilot assembly

 

 

6.

Gas regulator setting is not correct

6.

Replace gas regulator

 

 

 

 

 

 

 

ODS/pilot lights but flame goes out when

1.

Control knob not fully pressed in

1.

Press in control knob fully

 

control knob is released

2.

Control knob not pressed in long enough

2.

After ODS/pilot lights, keep control

 

 

 

 

 

knob pressed in 30 seconds

 

 

3.

Safety interlock system has been

3.

Wait one minute for safety interlock sys-

 

 

 

triggered

 

tem to reset. Repeat ignition operation

 

 

4.

Manual shutoff valve not fully open

4.

Fully open manual shut-off valve

 

 

5.

Thermocouple connection loose at con-

5.

Hand tighten until snug, then tighten

 

 

 

trol valve

 

1/4 turn more

 

 

6.

Pilot flame not touching thermocouple,

6.

A) Contact local natural gas company

 

 

 

which allows thermocouple to cool,

 

 

 

 

 

causing pilot flame to go out. This prob-

 

B) Clean ODS/pilot (see Cleaning and

 

 

 

lem could be caused by one or both of

 

Maintenance, page 15) or replace ODS/

 

 

 

the following:

 

pilot assembly

 

 

 

A) Low gas pressure

 

 

 

 

 

B) Dirty or partially clogged ODS/pilot

 

 

 

 

7.

Thermocouple damaged

7.

Replace thermocouple

 

 

8.

Control valve damaged

8.

Replace control valve

16

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Contents OWNER’S Operation and Installation Manual What to do if YOU Smell GASSafety Information 15,000 to 28,000 BTU/HR VENT-FREE Natural GAS HeaterProduct Features Product IdentificationLocal Codes UnpackingAssembly Installing LogAssembling Heater Removing Front Panel Of HeaterAIR for Combustion and Ventilation Providing Adequate VentilationAssembling and Attaching Brass Trim Unusually Tight ConstructionDetermining FRESH-AIR Flow for Heater Location AIR for Combustion VentilationDetermining if You Have a Confined or Unconfined Space Ventilation Air From Inside Building Ventilation AIRVentilation Air From Outdoors Installation Installation ItemsLocating Heater Check GAS TypeThermostat Sensing Bulb Installation OptionsMounting Heater to Wall Installing Bottom Mounting Screws Mounting Heater on Optional Hearth BaseAttaching Mounting Bracket To Wall Placing Heater On Mounting BracketMounting Heater to Optional Hearth Base Securing Hearth Base to FloorSee instructions included with mantel kit Assembling Mantel Connecting to GAS Supply Gas ConnectionFor Your Safety Read Before Lighting Pressure Testing Gas Supply Piping SystemPressure Testing Heater Gas Connections Operating HeaterManual Lighting Procedure Lighting InstructionsTo Turn OFF GAS To Appliance Thermostat Control OperationCleaning and Maintenance Inspecting BurnerTroubleshooting Observed Problem Possible Cause RemedyMaintenance, Top Gas leak. See Warning statement atSpecifications Replacement PartsTechnical Service Service HintsParts Centrals Accessories Illustrated Parts Breakdown RFN28TDParts List KEY Part Number Description QTYWarranty Information

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