Desa FVFM27PR installation manual Troubleshooting, See Cleaning and Mainte

Page 23

TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

ODS/pilot lights but flame goes

1. Control knob not fully pressed in

1.

Press in control knob fully

out when control knob is re-

2. Control knob not pressed in

2.

After ODS/pilot lights, keep con-

leased

3.

long enough

3.

trol knob pressed in 30 seconds

 

Equipment shutoff valve not

Fully open equipment shutoff

 

4.

fully open

4.

valve

 

Pilot flame not touching ther-

A) Contact local natural or

 

 

mocouple, which allows ther-

 

propane/LP gas company

 

 

mocouple to cool, causing

 

B) Clean ODS/pilot (see

 

 

pilot flame to go out. This

 

 

 

problem could be caused by

 

Cleaning and Maintenance,

 

 

one or both of the following:

 

page 20) or replace ODS/pilot

 

 

A) Low gas pressure

 

assembly

 

 

B) Dirty or partially clogged

 

 

 

5.

ODS/pilot

5.

Hand tighten until snug, then

 

Thermocouple connection

 

6.

loose at control valve

6.

tighten 1/4 turn more

 

Thermocouple damaged

Replace pilot assembly

 

7.

Control valve damaged

7.

Replace control valve

Burner does not light after ODS/

1. Burner orifice clogged

1.

Clean burner (see Cleaning

pilot is lit

 

 

 

and Maintenance, page 20)

 

2.

Inlet gas pressure is too low

2.

or replace burner orifice

 

Contact local natural or pro-

 

3.

Thermopile leads disconnect-

3.

pane/LP gas company

 

Reconnect leads (see Wiring

 

4.

ed or improperly connected

4.

Diagram, page 21)

 

Burners will not come on in

Replace battery in transmitter

 

 

remote position

 

and receiver

Delayed ignition burner

1. Manifold pressure is too low

1.

Contact local natural or pro-

 

2.

Burner orifice clogged

2.

pane/LP gas company

 

Clean burner (see Cleaning

 

 

 

 

and Maintenance, page 20)

 

 

 

 

or replace burner orifice

 

 

 

 

Burner backfiring during com-

1. Burner orifice is clogged or

1.

Clean burner (see Cleaning

bustion

 

damaged

 

and Maintenance, page 20)

 

2.

Damaged burner

2.

or replace burner orifice

 

Replace damaged burner

 

3.

Gas regulator defective

3.

Replace gas control

 

 

 

 

Slight smoke or odor during initial

1. Not enough air

1.

Check burner for dirt and

operation

 

 

 

debris. If found, clean burner

 

 

 

 

(see Cleaning and Mainte-

 

2.

Gas regulator defective

2.

nance, page 20)

 

Replace gas control

 

3.

Residues from manufacturing

3.

Problem will stop after a few

 

 

processes and logs curing

 

hours of operation

108382-01G

www.desatech.com

23

Image 23
Contents Also Design-Certified As a Vented Decorative Appliance FLAME-MAXVYM27NR, VYM27PR, FVFM27NR and FVFM27PR Table of Contents Safety Information Product Identification Safety InformationUnpacking Product FeaturesRemote Control Accessories Local CodesDetermining FRESH-AIR Flow for Heater Location AIR for Combustion VentilationProviding Adequate Ventilation Ventilation Air From Outdoors Ventilation AIRVentilation Air From Inside Building Vent-Free Operation Only InstallationInstallation and Clearances Check GAS TypeInstallation Floor Clearances If Using MantelMantel Clearances Masonry Fireplace Installing Damper Clamp Accessory for Vented OperationInstalling Heater Base Assembly Installation Items Needed Connecting to GAS SupplyPropane/LP Gas Natural Gas From Gas MeterTest Pressures Equal To or Less Than Psig 3.5 kPa Pressure Testing Gas Supply Piping SystemChecking GAS Connections Test Pressures In Excess Of 1/2 Psig KPaPressure Testing Heater Gas Connections Installing LogsLighting Instructions For Your Safety Read Before LightingOperating Heater Shutting Off Heater  MANUAL Lighting ProcedureOperating Heater To Turn OFF GAS To ApplianceThermostat Series Model HRC200 Optional Hand-HeldRemote Operation On/Off Series Model HRC100Burner Flame Pattern Inspecting BurnersPilot Flame Pattern Burner Primary AIR Holes Cleaning MaintenanceCleaning Burner Injector Holder and Pilot Air Inlet Hole Inspecting BurnersCleaning Maintenance Observed Problem Possible Cause Remedy TroubleshootingSee Cleaning and Mainte TroubleshootingMent at top Power is lowWALL-MOUNT Thermostat Receiver and Hand Held Thermostat Remote ControlReceiver and Hand Held Remote Control WALL-MOUNT ON/OFF SwitchModels VYM27NR, VYM27PR, FVFM27NR and FVFM27PR Illustrated Parts BreakdownParts List Limited Warranty VENT-FREE GAS LOG Heaters Warranty InformationKeep this Warranty

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