Vanguard Heating VMH3000TN Troubleshooting, Observed Problem Possible Cause Remedy

Page 16

®

NATURAL GAS RESIDENTIAL HEATERS

TROUBLESHOOTING

Note: For additional help, visit DESA International’s technical service web site at www.desatech.com.

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 electrode positioned wrong

1.

Replace ignitor

spark at ODS/pilot

2.

Ignitor electrode broken

2.

Replace ignitor

 

3.

Ignitor electrode not connected to igni-

3.

Reconnect ignitor cable

 

 

tor cable

 

 

 

4.

Ignitor cable pinched or wet

4.

Free ignitor cable if pinched by any

 

 

 

 

metal or tubing. Keep ignitor cable dry

 

5.

Piezo ignitor nut is loose

5.

Tighten nut holding piezo ignitor to

 

 

 

 

heater cabinet. Nut is located inside

 

 

 

 

heater cabinet at top

 

6.

Broken ignitor cable

6.

Replace ignitor cable

 

7.

Bad piezo ignitor

7.

Replace piezo ignitor

 

 

 

 

 

When ignitor button is pressed, there is

1.

Gas supply turned off or equipment

1.

Turn on gas supply or open equipment

spark at ODS/pilot but no ignition

 

shutoff 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 19) 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 triggered

3.

Wait one minute for safety interlock sys-

 

 

 

 

tem to reset. Repeat ignition operation

 

4.

Equipment shutoff valve not fully open

4.

Fully open equipment shutoff valve

 

5.

Thermocouple connection loose at con-

5.

Hand tighten until snug, then tighten 1/4

 

 

trol valve

 

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 19) 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

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Contents OWNER’S Operation and Installation Manual What to do if YOU Smell GASSafety Information Local CodesAssembly Product FeaturesProduct Identification UnpackingAttaching Brass Front Trim to Front Panel Assembling and Attaching Brass TrimAIR for Combustion and Ventilation Providing Adequate VentilationUnusually Tight Construction Confined and Unconfined SpaceDetermining 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 ItemsCheck GAS Type Locating HeaterThermostat Sensing Bulb Installation OptionsMounting Heater to Wall Installing Bottom Mounting Screws Placing Heater On Mounting BracketMounting Heater to Optional Hearth Base Mounting Heater on Optional Hearth BaseSecuring Hearth Base to Floor Mounting Heater to Optional Mantel Connecting to GAS SupplyAssembling Mantel Pressure Testing Heater Gas Connections Pressure Testing Gas Supply Piping SystemChecking GAS Connections For Your Safety Read Before Lighting Operating HeaterLighting Instructions To Turn OFF GAS To AppliancePilot Flame Pattern Inspecting BurnerBurner Flame Pattern Troubleshooting Observed Problem Possible Cause RemedyMaintenance, Gas leak. See Warning statement at Replacement Parts Cleaning and MaintenanceService Hints Illustrated Parts BREAKDOWN21 VMH3000TNParts List KEY VMH3000TN Description QTYSpecifications Technical ServiceAccessories Equipment Shutoff Valve GA5010FAN Kits Premier MantelWarranty Information International

VMH3000TN specifications

The Vanguard Heating VMH3000TN is a state-of-the-art heating solution designed to deliver efficient warmth and comfort in a variety of environments. Its innovative features and advanced technologies make it an ideal choice for both residential and commercial applications.

One of the standout features of the VMH3000TN is its powerful heating capacity. With a substantial output, this unit can quickly warm large spaces, ensuring that every corner of the room reaches a comfortable temperature. This makes it perfect for homes, offices, workshops, and other facilities that require reliable heat distribution.

The VMH3000TN comes equipped with advanced energy-efficient technology. It incorporates a high-performance heat exchanger that maximizes thermal efficiency, helping to reduce energy consumption and lower heating costs. This makes it an environmentally-friendly option for consumers looking to minimize their carbon footprint while enjoying the benefits of effective heating.

Another notable characteristic of the VMH3000TN is its user-friendly interface. The product features intuitive controls that allow users to customize their heating experience easily. With programmable settings, users can set specific heating schedules according to their lifestyle, ensuring that spaces are warm when needed without excessive energy use.

Safety is also a priority in the design of the VMH3000TN. It is equipped with multiple safety features, including overheat protection and a reliable thermostat. These systems work together to prevent potential hazards, giving users peace of mind while using the heater.

Durability and reliability are additional attributes of this model. Constructed with high-quality materials, the VMH3000TN is built to withstand the rigors of daily use. Its robust design ensures longevity, making it a worthwhile investment for those seeking a long-term heating solution.

The VMH3000TN is also designed with versatility in mind. Its sleek and compact design enables it to fit seamlessly into a variety of spaces and decor styles. It can be easily installed in homes, garages, or offices without taking up excessive space.

In summary, the Vanguard Heating VMH3000TN is a powerful, efficient, and reliable heating solution that caters to diverse heating needs. Its array of features, safety mechanisms, and user-friendly operation make it a top choice for consumers seeking effective climate control. Whether for personal comfort or professional use, the VMH3000TN promises to deliver warm and inviting spaces all winter long.
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