Desa CBN20T EN - Manual (Page 22)

www.desatech.com 107882-01K 22
TROUBLESHOOTING
Continued
POSSIBLE CAUSE
1. Gas leak. See Warning
statement on page 21
2. Control valve defective
1. Foreign matter between con-
trol valve and burner
2. Gas leak. See Warning
statement on page 21
1. Not enough combustion/ven-
tilation air
OBSERVED PROBLEM
Gas odor even when control knob
is in OFF position
Gas odor during combustion
Moisture/condensation noticed
on windows
REMEDY
1. Locate and correct all leaks
(see Checking Gas Connec-
tions, page 13)
2. Replace control valve
1. Take apart gas tubing and
remove foreign matter
2. Locate and correct all leaks
(see Checking Gas Connec-
tions, page 13)
1. Refer to Air for Combustion
and Ventilation requirements
(page 5)
REPLACEMENT PARTS
Note: Use only original replacement parts. This
will protect your warranty coverage for parts
replaced under warranty.
PARTS UNDER WARRANTY
Contact authorized dealers of this product. If
they canʼt supply original replacement part(s),
call DESA Heating Productsʼ Technical Service
Department at 1-866-672-6040.
When calling DESA Heating Products, have
ready
• your name
• your address
• model and serial numbers of your heater
• how heater was malfunctioning
• type of gas used (propane/LP or natural gas)
• purchase date
Usually, we will ask you to return the part to the
factory.
PARTS NOT UNDER WARRANTY
Contact authorized dealers of this product. If they
canʼt supply original replacement part(s), either
contact your nearest Parts Central (see page 30)
or call DESA Heating Products at 1-866-672-6040
for referral information.
When calling DESA Heating Products, have
ready
• model number of your heater
• the replacement part number
SERVICE HINTS
When Gas Pressure Is Too Low
• pilot will not stay lit
• burner will have delayed ignition
• heater will not produce specified heat
• propane/LP gas supply may be low
You may feel your gas pressure is too low. If so, con-
tact your local natural or propane/LP gas supplier.
TECHNICAL SERVICE
You may have further questions about installation,
operation, or troubleshooting. If so, contact DESA
Heating Productsʼ Technical Service Department
at 1-866-672-6040. When calling please have your
model and serial numbers of your heater ready.
You can also visit DESA Heating Productsʼ techni-
cal service web site at www.desatech.com .
SERVICE PUBLICATIONS
You can purchase a service manual from the address
listed on the back page of this manual. Send a check
for $5.00 payable to DESA Heating Products.