General Troubleshooting (cont’d)
PROBLEM (cont'd) | PROBABLE CAUSE (cont'd) | REMEDY (cont'd) | ||
Burner cycle on and off | 1. Gas pressure too high or too low. | 1. | Supply pressure should be 5" - 14" w.c. for natural gas or 11" - 14" | |
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| w.c. for propane gas. | |
| 2. | Burner not grounded | 2. | Make certain integrated circuit board is grounded to ignitor. |
| 3. | Circuit board not grounded. | 3. | Make certain integrated circuit board is grounded to furnace chassis. |
| 4. | Faulty integrated circuit board | 4. | If 24 volt is available to the integrated circuit board and all other |
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| causes have been eliminated, replace board. | |
| 5. | Combustion air proving switch(es) not | 5. |
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| closing. | a) Make sure unit is properly vented. | ||
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| b) Remove obstructions from vent. | |
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| c) Replace faulty tubing to pressure switch. | |
| 6. | Faulty combustion air proving switch. | 6. | Replace combustion air proving switch. |
| 7. | Flame sensor grounded. | 7. | Be certain flame sensor lead is not grounded or insulation or ceramic |
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| is not cracked. Replace as required. | |
| 8. | Cracked ceramic at sensor. | 8. | Replace sensor. |
| 9. | Incorrect polarity. | 9. | Reverse line volt leads to integrated circuit board. |
No heat (Heater | 1. Incorrect valve outlet pressure or orifice. | 1. | Check valve outlet pressure. See Rating plate for manifold pressure. | |
Operating) | 2. Cycling on limit control. | 2. | Check air throughput. | |
| 3. | Improper thermostat location or adjustment. | 3. | See thermostat manufacturer's instructions. |
Fan or venter motor will | 1. Circuit open. | 1. | Check wiring and connections. | |
not run | 2. Defective integrated circuit board. | 2. | Replace board. | |
| 3. | Defective motor. | 3. | Replace motor. |
Fan or venter motor turns | 1. Motor overload device cycling on and off. | 1. | Check motor load against motor rating plate. Replace motor if needed. | |
on and off while burner is |
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operating |
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Fan or venter motor cuts | 1. Low or high voltage supply. | 1. | Correct electric supply. | |
out on overload | 2. Defective motor. | 2. | Replace motor. | |
| 3. | Poor airflow. | 3. | Clean motor, fan, fan guard, filter, and coils. |
| 4. | Defective bearing or lubrication. | 4. | Lubricate bearings (motor permitting) or replace motor. |
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, | |
THIRD: | Contact | REZNOR®/ Thomas & Betts Corporation |
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| 150 McKinley Avenue |
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| Mercer, PA 16137 |
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| Phone: (724) |
Model No. _________________________________
Heater Serial No._____________________________
Date of Installation ___________________________
| (800) |
| ©2005 Thomas & Betts Corporation, All rights reserved. |
| MANUFACTURER OF HEATING, COOLING, AND VENTILATING SYSTEMS |
Form | Trademark Note: Reznor® and TCORE2® are trademarks of Thomas & Betts. |
9/05 Form |