Desa MVO24VPA, MVO18VPA, MVO24VNA, MVO18VNA Contact local natural or, Replace burner orifices

Page 14

TROUBLESHOOTING

Continued

OBSERVED PROBLEM POSSIBLE CAUSE

REMEDY

ODS/pilot lights but flame goes out when control knob is re- leased

1.Control knob not fully pressed in

2.Control knob not pressed in long enough

3.Safety interlock system has been triggered

4.Equipment shutoff valve not fully open

5.Pilot flame not touching thermocouple, which allows thermocouple to cool, causing pilot flame to go out. This problem could be caused by one or both of the following:

A)Low gas pressure

B)Dirty or partially clogged ODS/Pilot

6.Thermocouple connection loose at control valve

7.Thermocouple damaged

8.Control valve damaged

1.Press in control knob fully

2.After ODS/pilot lights, keep control knob pressed in for 30 seconds

3.Wait one minute for safety in- terlock system to reset. Repeat ignition operation

4.Fully open equipment shutoff valve

5.A) Contact local natural or propane/LP gas company

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

6.Hand tighten until snug, then tighten 1/4 turn more

7.Replace pilot assembly

8.Replace control valve

Burner does not light after ODS/

1. Inlet gas pressure is too low

1.

Contact local natural or

pilot is lit

2.

Burner orifice(s) clogged

 

propane/LP gas company

 

2.

Clean burner(s) (see Cleaning

 

 

 

 

and Maintenance, page 12) or

 

 

 

 

replace burner orifice(s)

 

3.

Burner orifice(s) diameter

3.

Replace burner orifice(s)

 

 

too small

4.

Put remote selector in ON

 

4.

Remote selector in OFF

 

 

position (Remote use only)

 

position

 

5.

Wire disconnected from gas

5.

See Wiring Diagram, page

 

 

control (Remote use only)

 

11)

 

 

 

 

Delayed ignition of burner

1. Manifold pressure is too

1.

Contact local natural or

 

 

low

 

propane/LP gas company

 

2.

Burner orifice(s) clogged

2.

Clean burner(s) (see Cleaning

 

 

 

 

and Maintenance, page 12)

 

 

 

 

Burner backfiring during com-

1. Burner orifice is clogged or

1.

Clean burner (see Cleaning

bustion

 

damaged

 

and Maintenance, page 12) or

 

 

 

 

replace burner orifice

 

2.

Damaged burner

2.

Replace damaged burner

 

3.

Gas regulator defective

3.

Replace gas regulator

14

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114924-01B

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Contents What to do if YOU Smell GAS MVO24VNA, MVO24VPA MVO18VNA and MVO18VPATable of Contents Safety Information Provide adequate clearances around air openings Local CodesHigh traffic areas Windy or drafty areas Remove log set assembly from carton Product FeaturesInstallation Product IdentificationVenting Specifications for Installation and ClearancesFlue Opening Specifications InstallationInstallation Items Needed Installing ApplianceConnecting to GAS Supply Propane/LP Checking GAS ConnectionsNatural Test Pressures In Excess Of 1/2 PsigTest Pressures Equal To or Less Than 1/2 Psig 3.5 kPa Placement of Loose EmbersPressure Testing Appliance Gas Connections Lighting Instructions For Your Safety Read Before LightingOperating Appliance To Turn OFF GAS To Appliance Wiring DiagramWhen Using Remote Optional HAND-HELD Remote OperationPilot Flame Pattern Cleaning MaintenanceInspecting Burners Check pilot flame pattern and burner flame pat- terns oftenTroubleshooting Observed Problem Possible Cause RemedyReplace burner orifices Contact local natural orPilot is lit Burner orifices clogged Propane/LP gas company Replace burner orificeTurn control knob to LO Burners are lit Position when burners areOperation Processes and log curing Hours of operation Cold Minute Air is gas line Operate burners until air isGas leak. See Warning statement at top Gas leak. See WarningStatement at top Accessories Service HintsTechnical Service Replacement PartsIllustrated Parts Breakdown MVO24VNA, MVO24VPA MVO18VNA, MVO18VPAParts List Limited Warranty Vented GAS LOG Appliances Warranty InformationKeep this Warranty

MVO24VPA, MVO18VNA, MVO18VPA, MVO24VNA specifications

Desa MVO18VPA, MVO24VPA, MVO18VNA, and MVO24VNA represent a line of versatile and efficient heating solutions designed for various residential and commercial applications. These models are tailored to meet diverse user requirements while providing exceptional value through advanced technologies and features.

At the core of the Desa line is the commitment to energy efficiency. The MVO series incorporates high-efficiency motors and advanced heat exchange systems that ensure optimal performance while minimizing energy consumption. This not only leads to cost savings on utility bills but also reflects a commitment to sustainability, making these models an excellent choice for eco-conscious consumers.

In terms of heating capacity, the MVO18 models offer a robust output suitable for medium-sized spaces, while the MVO24 models are designed for larger areas, providing flexibility for different applications. The ability to adjust heating levels allows users to customize their environment according to their specific needs, enhancing comfort.

The MVO series is equipped with innovative technologies that ensure consistent performance. The integration of intelligent temperature controls provides precise management of heating levels, enabling users to maintain their desired comfort without unnecessary energy expenditure. Additionally, these models feature durable construction materials that ensure longevity and reliable operation over time.

User convenience is a significant consideration in the design of the MVO series. Remote control functionality allows users to effortlessly adjust settings from a distance, adding a layer of convenience for those with busy lifestyles. Furthermore, some models are equipped with programmable timers, enabling users to set specific heating schedules that align with their daily routines.

Safety is paramount in the design of the Desa MVO series. These models come with multiple safety features, including overheat protection and automatic shut-off mechanisms, ensuring peace of mind for users.

In summary, the Desa MVO18VPA, MVO24VPA, MVO18VNA, and MVO24VNA heating models stand out for their energy efficiency, advanced heating technologies, and user-friendly features. Their adaptability makes them suitable for a range of environments, catering to the diverse needs of homeowners and businesses alike. With a focus on safety and reliability, the Desa MVO series represents an excellent investment for those seeking effective heating solutions.