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Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 40
FOR SERVICE OR REPAIR, FOLLOW THESE STEPS IN ORDER:
FIRST: Contact the Installer
Name __________________________________________________________
Address_________________________________________________________
__________________________________________________________
__________________________________________________________
Phone _____________________________________
SECOND: Contact the nearest distributor (See Yellow Pages). If no listing,
contact Authorized Factory Representative, 1-800-695-1901 (Press 1).
THIRD: Contact REZNOR
®
/ Thomas & Betts Corporation
150 McKinley Avenue
Mercer, PA 16137
Phone: (724) 662-4400
Model No. _________________________________
Heater Serial No._____________________________
Date of Installation ___________________________
(800) 695-1901; www.RezSpec.com
©2005 Thomas & Betts Corporation, All rights reserved.
MANUFACTURER OF HEATING, COOLING, AND VENTILATING SYSTEMS
Trademark Note: Reznor
®
and TCORE
2®
are trademarks of Thomas & Betts.
9/05 Form RZ-NA I-LDAP (Version .2)
General Troubleshooting (cont’d)
PROBLEM (cont'd) PROBABLE CAUSE (cont'd) REMEDY (cont'd)
1. Gas pressure too high or too low. 1. Supply pressure should be 5" - 14" w.c. for natural gas or 11" - 14"
w.c. for propane gas.
2. Burner not
g
rounded 2. Make certain inte
g
rated circuit board is
g
rounded to i
g
nitor.
3. Circuit board not
g
rounded. 3. Make certain inte
g
rated circuit board is
g
rounded to furnace chassis.
4. Faulty integrated circuit board 4. If 24 volt is available to the integrated circuit board and all other
causes have been eliminated, replace board.
5.
a
)
Make sure unit is
p
ro
p
erl
y
vented.
b)
Remove obstructions from vent.
c
)
Re
p
lace fault
y
tubin
g
to
p
ressure switch.
6. Fault
y
combustion air
p
rovin
g
switch. 6. Re
p
lace combustion air
p
rovin
g
switch.
7. Flame sensor grounded. 7. Be certain flame sensor lead is not grounded or insulation or ceramic
is not cracked. Replace as required.
8. Cracked ceramic at sensor. 8. Re
p
lace sensor.
9. Incorrect
p
olarit
y
. 9. Reverse line volt leads to inte
g
rated circuit board.
1. Incorrect valve outlet
p
ressure or orifice. 1. Check valve outlet
p
ressure. See Ratin
g
p
late for manifold
p
ressure.
2. C
y
clin
g
on limit control. 2. Check air throu
g
h
p
ut.
3. Im
p
ro
p
er thermostat location or ad
j
ustment. 3. See thermostat manufacturer's instructions.
1. Circuit o
p
en. 1. Check wirin
g
and connections.
2. Defective inte
g
rated circuit board. 2. Re
p
lace board.
3. Defective motor. 3. Re
p
lace motor.
Fan or venter motor turns
on and off while burner is
operating
1. Motor overload device cycling on and off. 1. Check motor load against motor rating plate. Replace motor if needed.
1. Low or hi
g
h volta
g
e su
pp
l
y
. 1. Correct electric su
pp
l
y
.
2. Defective motor. 2. Re
p
lace motor.
3. Poor airflow. 3. Clean motor, fan, fan
g
uard, filter, and coils.
4. Defective bearin
g
or lubrication. 4. Lubricate bearin
g
s
(
moto r
p
ermittin
g)
or re
p
lace motor.
Fan or venter motor will
not run
Fan or venter motor cuts
out on overload
Burner cycle on and off
5. Combustion air proving switch(es) not
closing.
No heat (Heater
Operating)