Form 421, Page 24
32. Troubleshooting (cont'd)
FIRST: Contact the installer.
Name _______________________________________________________________________________________
Address ________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
Phone ________________________________________________________________________________________
SECOND: Contact the nearest distributor (See telephone Yellow Pages.)
THIRD: Contact: REZNOR®, Thomas & Betts Corporation
150 McKinley Avenue
Mercer, PA 16137
Phone: (724) 662-4400
Model No. _______________________________________
Unit Serial No. ___________________________________
Date of Installation ________________________________
©2000 Thomas & Betts Corporation, All rights reserved. Printed in the U.S.A.
MANUFACTURER OF GAS, OIL, ELECTRIC HEATING AND VENTILA TING SYSTEMS
Trademark Note: Reznor® is registered in the United States and other countries.
3/00 YL Form 421-A.5
FOR SERVICE OR REPAIR, FOLLOW THESE STEPS IN ORDER:
TROUBLE (cont'd) PROBABLE CAUSE (cont'd) REMEDY (cont'd)
Pilot lights, main 3. Ignition control does not power main valve. 3.
va lve will not open a) Loose w ire connections. a) Check and tighten all wiring connections.
(cont'd) b) Flame sensor grounded. (Pilot lights - spark
continues ) b)Be certain flame sensor lead is not grounded or insulat ion or
ceramic is not cracked. Replace as req uired.
c) Gas pressure incorrect. c) Set supply pressure at 5" w.c. to 14" w.c. for natural gas and
11" w.c. t o 14" w.c. for p ropane gas.
d) Crack ed ceramic at sensor. d) Rep lace sensor.
e) Faulty ignition controller. e) If all checks indicat e no other cause, r eplace ignition
controller. Do not attempt to repair ignition controller; it has no
field replacea ble components .
No heat (Heater 1. Dirty Filters 1. Clean or rep lace filters.
Operating) 2. In correct manifold p ressure or orifices . 2. Check manifold pressure (See Paragraph 9).
3. Cycling on limit con trol. 3.Check air throughp ut (See Paragraph 15).
4. Improp er thermost at location or adju stment. 4. See ther mostat manufact urer's instr uctions.
5. Belt slipping on blower. 5. Adjust belt tension.
Cold air delivered 1. Fan co n trol improp erly located or ad justed. 1. Relocate or adjust fan control (See Paragraph 19).
On Start-up 2. Defective fan control. 2. Replace fan control.
During Operation 3. Blower set for too low temprrature rise. 3. Slow dow n blower or increas e s tatic pres sure..
4. Incorrect manifold pressure. 4. Check man ifold line pressu re (See Paragraph 9).
Motor will not run 1. Circuit open. 1. Check wiring and connections.
2. Fan cont rol inoperative . 2. Replace fan cont rol.
3. Defectiv e motor or capacit or. 3. Rep lace motor or cap acitor.
Motor turns on and 1. Fan con t rol improperly located or adjusted . 1. Relocate or adjust fan control (See Paragraph 19).
off while burner is 2. Defective fan control. 2. Replace fan con trol.
operating (S ee
"Motor... " below)
3. Mot or overload device cy cling on and off. 3. Check motor load against motor rating plate. Replace motor
if needed.
4. 3 phase motor rotating in opposite 4. Interchange 2 legs on sup ply connect ions.
Blower m otor cuts 1. Improper motor pulley and/or adjustment. 1. See instructions on air throughput .
out on overload 2. Improp er static p ressure in t he duct sys tem. 2. Adjust duct system dampers.
3. Low voltage. 3. Check power supply.