Desa MPF24VPA, MPF18VPA, MPF18VNA Troubleshooting, Observed Problem Possible Cause Remedy

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TROUBLESHOOTING

WARNING: Turn off appliance and let cool before servicing. Only a qualified service 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.

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

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

 

 

 

When ignitor button is pressed,

1. Ignitor electrode not con-

1.

Reconnect ignitor cable

there is no spark at ODS/pilot

 

nected to ignitor cable

 

 

 

2.

Ignitor cable pinched or

2.

Free ignitor cable if pinched

 

 

wet

 

by any metal or tubing. Keep

 

 

 

 

ignitor dry

 

3.

Broken ignitor cable

3.

Replace ignitor cable

 

4.

Bad piezo ignitor

4.

Replace piezo ignitor

 

5.

Ignitor electrode positioned

5.

Replace pilot assembly for

 

 

wrong or broken

 

remote-ready units

When ignitor button is pressed in there is spark at ODS/pilot but no ignition

1.Gas supply turned off or equipment shutoff valve closed

2.Control knob not in PILOT position

3.Control knob not pressed in while in PILOT position

4.Air in gas lines when in- stalled

5.Depleted gas supply (pro- pane/LP only)

6.ODS/pilot is clogged

7.External gas regulator setting is incorrect

1.Turn on gas supply or open equipment shutoff valve

2.Turn control knob to PILOT position

3.Press in control knob while in PILOT position

4.Continue holding down con- trol knob. Repeat igniting op- eration until air is removed

5.Contact local propane/LP gas company

6.Clean ODS/pilot (see Cleaning and Maintenance, page 12) or replace ODS/pilot assembly

7.Replace gas regulator

114925-01C

www.desatech.com

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Contents MPF24VNA, MPF24VPA MPF18VNA and MPF18VPA What to do if YOU Smell GASTable of Contents Safety Information High traffic areas Windy or drafty areas Local CodesProvide adequate clearances around air openings Installation Product FeaturesRemove log set assembly from carton Product IdentificationFlue Opening Specifications Installation and ClearancesVenting Specifications for InstallationConnecting to GAS Supply Installing ApplianceInstallation Items Needed Test Pressures In Excess Of 1/2 Psig 3.5 kPa Checking GAS ConnectionsNatural From Gas Meter 5 W.C.** to 10.5 W.C. Pressure Pressure Testing Appliance Gas Connections Placement of Loose EmbersTest Pressures Equal To or Less Than 1/2 Psig 3.5 kPa Operating Appliance Pilot Flame Pattern Inspecting BurnersON/OFF Series Model HRC100 Check pilot flame pattern and burner flame pat- terns oftenCleaning Maintenance Service HintsTechnical Service Replacement PartsObserved Problem Possible Cause Remedy TroubleshootingPilot is lit Burner orifices clogged Propane/LP gas company Contact local natural orReplace burner orifices Replace burner orificeCleaners or similar products Burners are lit Position when burners areGas regulator defective Control valve defective Check manifold pressureStatement at top Gas leak. See WarningGas leak. See Warning statement at top Accessories SpecificationsWiring Diagram MPF24VNA, MPF24VPA MPF18VNA, MPF18VPA Illustrated Parts BreakdownParts List Keep this Warranty Warranty InformationLimited Warranty Vented GAS LOG Appliances

MPF18VNA, MPF24VPA, MPF18VPA specifications

The Desa MPF24VPA, MPF18VPA, and MPF18VNA are innovative models designed for efficient heating solutions tailored to a variety of residential and commercial applications. These products showcase advanced technology and engineering that cater to diverse consumer needs, making them notable players in the heating equipment market.

One of the defining features of the Desa MPF series is their high heating capacity. The MPF24VPA, for instance, can deliver a robust output suitable for larger spaces, while the MPF18VPA and MPF18VNA offer slightly lower capacities, making them ideal for smaller areas. This range allows consumers to choose models according to the specific requirements of their environments.

Energy efficiency is another hallmark of the Desa MPF series. These models incorporate state-of-the-art combustion technology, ensuring maximum fuel utilization and reduced emissions. With features such as automatic ignition and efficient heat exchangers, users can expect quick heat responses and consistent comfort without wasting energy, contributing to lower utility bills.

Durability and user-friendly operation are also significant characteristics of the MPF24VPA, MPF18VPA, and MPF18VNA. Constructed with high-quality materials and components, these heaters are built to withstand the rigors of regular use. Moreover, the intuitive controls make operation straightforward, allowing users to easily adjust settings to suit their needs.

Safety is always a top priority in any heating appliance, and Desa takes this aspect seriously. The MPF series includes several safety features, such as automatic shut-off in case of overheating, low oxygen sensors, and robust construction that prevents overheating and accidental damage. These precautions ensure that consumers can enjoy their heating solutions confidently.

Additionally, the MPF series features versatile installation options. The models can be configured for vented or vent-free operation, providing flexibility based on local regulations or personal preferences. Their sleek designs are also aesthetically pleasing, allowing them to blend seamlessly into various home or office environments.

In conclusion, the Desa MPF24VPA, MPF18VPA, and MPF18VNA are exemplary heating units that combine efficiency, effectiveness, and safety. With diverse features and options designed to cater to a wide audience, these models stand out as reliable choices for anyone looking for high-quality heating solutions. Whether for a cozy home or a bustling commercial space, the Desa MPF series is engineered to deliver warmth and comfort through innovative design and technology.
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