Mr. Heater MHVFB10LP - Manual (Page 13)

13
Installation Instructions and Owner’s Manual Unvented LP-Gas Fired Buddy Wall-Mount Heater
TROUBLESHOOTING
WARNING: If you smell gas:
• Shut off gas supply
• Do not try to light any appliance
• Do not touch any electrical switch; do not use any phone in your building
• Immediately call you gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
•
If you cannot reach your gas supplier, call the fire department.
IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning supplies, paint, paint remover,
cigarette smoke, cements and glues, new carpet or textiles, etc., create fumes. These fumes may mix with combustion air
and create odors and possible discoloration of walls and ceilings.
OBSERVED SYMPTOM POSSIBLE CAUSE REMEDY
TROUBLESHOOTING CON’T
Slight smoke or odor during
initial operation
Heater produces a whistling
noise when burner is lit
Burner backfiring during opera-
tion
OBSERVED SYMPTOM POSSIBLE CAUSE REMEDY
1. Clean burner orifice (see Cleaning and
Maintenance on page 13), or replace
burner orifice
2. Replace burner
3. Replace gas regulator
1. Problem will stop after a few hours of
operation
1. Turn control knob to LO position and let
warm up for a minute.
2. Operate burner until air is removed from
line have gas line checked by local gas
company.
3. Observe minimum installation clearances
(see Figure 4 page6)
4. Clean burner orifice (see Cleaning and
Maintenance on page 13), or replace
burner orifice.
1. Turn heater off when using furniture
polish, wax, carpet cleaner or similar
products.
White powder residue forming
within burner box or on adja-
cent walls or furniture
1. Heater burning vapors from paint, hair
spray, glues, etc. See IMPORTANT state-
ment above
2. Gas leak. See WARNING statement at top
of page.
1. Not enough fresh air is available
2. Low line pressure
3. ODS/pilot is partially clogged
1. Gas leak. See WARNING statement at top
of page
2. Control valve is defective
1. Foreign matter between control valve and
burner
2. Gas leak. See WARNING statement at top
of page
1. Metal expanding while heating or contract-
ing while cooling
1. Not enough combustion/ventilation air
1. Ventilate room. Stop using odor-causing
products while heater is running.
2. Locate and correct all leaks (see Checking
Gas Connections, page 8)
1. Open window and/or door for ventilation
2. Contact local gas company
3. Clean ODS/pilot (see Cleaning and Mainte-
nance, page 11)
1. Locate and correct all leaks (see Checking
Gas Connections, page 8)
2. Replace control valve
1. Take apart gas tubing and remove foreign
matter
2. Locate and correct all leaks (see Checking
Gas Connections, page 8)
1. This is common with most heaters. If noise
is excessive, contact qualified service
person
1. Refer to Fresh Air for Combustion and
Ventilation page 3 through 5.
Heater produces unwanted
odors.
Heater shuts off in use (ODS
operates)
Gas odor even when control
knob is in OFF position
Gas odor during combustion
Heater produces a clicking/tick-
ing noise just after burner is lit
or shut off
Moisture/condensation noticed
on windows
1. Burner orifice is clogged or damaged
2. Burner damaged
3. Gas regulator defective
1. Residues from manufacturing process
1. Turning control knob to HI position when
burner is cold
2. Air in gas line
3. Air passageways on heater blocked
4. Dirty or partially clogged burner orifice.
1. When heated, vapors from furniture polish,
wax, carpet cleaners, etc., turn into white
powder residue