Desa VFRMV18PA, VFRMV18NA, VFRMV24NA, VFRMV24PA ODS/pilot lights but flame goes, Been triggered

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

 

long enough

 

trol knob pressed in 30 seconds

 

3.

Safety interlock system has

3.

Wait one minute for safety in-

 

 

been triggered

 

terlock system to reset. Repeat

 

4.

Equipment shutoff valve not

 

ignition operation

 

4.

Fully open equipment shutoff

 

 

fully open

 

valve

 

5.

Pilot flame not touching ther-

5.

A) Contact local natural or

 

 

mocouple, which allows ther-

 

propane/LP gas company

 

 

mocouple to cool, causing pilot

 

 

 

 

flame to go out. This problem

 

B) Clean ODS/pilot (see

 

 

could be caused by one or both

 

Cleaning and Maintenance,

 

 

of the following:

 

page 20) or replace ODS/pilot

 

 

A) Low gas pressure

 

assembly

 

 

B) Dirty or partially clogged

 

 

 

 

ODS/pilot

 

 

 

6.

Thermocouple connection

6.

Hand tighten until snug, then

 

 

loose at control valve

 

tighten 1/4 turn more

 

7.

Thermocouple damaged

7.

Replace pilot assembly

 

8.

Control valve damaged

8.

Replace control valve

 

 

 

 

One or both burners do not light

1. Inlet gas pressure is too low

1.

Contact local natural or pro-

after ODS/pilot is lit

2.

Burner orifice(s) clogged

 

pane/LP gas company

 

2.

Clean burner(s) (see Cleaning

 

 

 

 

and Maintenance, page 20) or

 

3.

Mislocated crossover tube

 

replace burner orifice(s)

 

3.

Contact qualified service person

 

4.

Burner orifice(s) diameter is

4.

Replace burner orifice(s)

 

 

too small

5.

Put remote selector in ON

 

5.

Remote selector in OFF

 

 

position

 

position

 

6.

Wire disconnected from gas

6.

See Wiring Diagram, page 21

 

 

control

 

 

 

 

 

 

Delayed ignition of burner

1. Manifold pressure is too low

1.

Contact local natural or pro-

 

2.

Burner orifice(s) clogged

 

pane/LP gas company

 

2.

Clean burner(s) (see Cleaning

 

 

 

 

and Maintenance, page 20) or

 

3.

Mislocated crossover tube

 

replace burner orifice(s)

 

3.

Contact qualified service person

 

 

 

 

Burner backfiring during com-

1. Burner orifice is clogged or

1.

Clean burner (see Cleaning

bustion

 

damaged

 

and Maintenance, page 20) or

 

2.

Damaged burner

 

replace burner orifice

 

2.

Replace damaged burner

 

3.

Gas regulator defective

3.

Replace gas regulator

114745-01B

www.desatech.com

23

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Contents Ansi Z21.11.2a-2003 Ansi Z21.60-2003 VFRMV18NA, VFRMV18PA VFRMV24NA, VFRMV24PATable of Contents Safety Information Provide adequate clearances around air openings Unpacking Product IdentificationLocal Codes Determining FRESH-AIR Flow for Appliance Location AIR for Combustion VentilationProviding Adequate Ventilation Ventilation Air From Inside Building Ventilation AIRVentilation Air From Outdoors AIR for Combustion Ventilation InstallationCheck GAS Type Installation and Clearances for VENT-FREE OperationMinimum Noncombustible Material Clearances InstallationFloor Clearances Mantel ClearancesMasonry Manufactured FireplaceFireplace Installing Damper Clamp Accessory for Vented OperationInstalling Heater Assembly Installation Items NeededPropane/LP External Regulator Supply Tank Vent Pointing Down Connecting to GAS SupplyPropane/LP From Checking GAS ConnectionsTo Gas Control Valve Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPa Test Pressures In Excess Of 1/2 Psig 3.5 kPaLighting Instructions For Your Safety Read Before LightingOperating Heater Shutting Off Heater To Turn OFF GAS To AppliancePropane/LP Natural Thermostat Series Model Ghrctb Manual Lighting ProcedureOptional HAND-HELD Remote Operation ON/OFF Series Model GhrcbCheck pilot flame pattern and burner flame pat- terns often Auto Shutoff FeatureInspecting Burners Pilot Flame PatternBurner Injector Holder and Pilot AIR Inlet Hole Cleaning MaintenanceBurner Flame Pattern Propane/LP Wiring DiagramObserved Problem Possible Cause Remedy TroubleshootingLow gas pressure Assembly Out when control knob is reSafety interlock system has Clean ODS/pilot seeTurning control knob to HI Cleaners or similar productsGas regulator defective Replace gas regulator Operation Processes and logs curing Hours of operationGas leak. See Warning Accessories SpecificationsReplacement Parts Technical ServiceFB36CA, FB42C Series CIRCULATING, FB36NCA, FB42NC Receiver and HAND-HELD Thermostat Remote Control KIT GhrctbReceiver and HAND-HELD Remote Control KIT Ghrcb WALL-MOUNT Thermostat Switch GWMT1VFRMV18NA, VFRMV18PA Illustrated Parts BreakdownParts List 114745-01B 114745-01B Limited Warranty VENT-FREE GAS LOG Heaters Warranty InformationKeep this Warranty

VFRMV24PA, VFRMV18PA, VFRMV18NA, VFRMV24NA, VFRMV24PA specifications

Desa's VFRMV series is a line of advanced heating solutions designed for energy efficiency and optimal comfort. The series includes models VFRMV24PA, VFRMV18PA, VFRMV18NA, VFRMV24NA, and VFRMV24PA. Each model is tailored to meet different heating demands, making them suitable for various residential and commercial applications.

One of the defining features of the VFRMV series is its inverter technology, which adjusts the compressor speed to match the heating or cooling needs of the environment. This capability not only enhances energy efficiency but also contributes to a quieter operation. Users can expect significant energy savings, as the inverter technology minimizes energy consumption during periods of low demand.

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