COMMERCIAL GAS E.I. TROUBLESHOOTING SEQUENCE
For Honeywell Valve
NOTE:
Troubleshooting should be done by qualified service personnel familiar with the
|
|
|
| ELECTRONIC | |
TURN GAS SUPPLY OFF |
| CHECK | IGNITION | ||
| TERMINALS | ||||
SET THERMOSTAT |
| - | LINE VOLTAGE POWER | ||
|
| SENSING ROD. | |||
TO CALL FOR HEAT | NO | - | LOW VOLTAGE TRANSFORMER |
| |
VALVE IS POWERED | - | AQUASTAT (E.C.O.) |
| MINIMUM: | |
| - | WIRING |
| .3 | |
(24 VAC NOMINAL) |
|
|
| ||
|
|
|
| VOLTAGE 24 | |
|
|
|
|
| |
YES |
|
|
|
| INSET |
|
|
|
|
| |
| NO | CHECK |
|
| |
IS FLUE DAMPER POWERED | - | SWITCH CONTACT SS |
|
| |
|
| OR ES NOT MADE | NO | REPLACE ENTIRE | |
ACROSS TERMINALS 3 & 7 |
| - | |||
|
| DAMPER FUSE |
| DAMPER ASSEMBLY | |
|
| - | BINDING OR DAMAGED |
|
|
|
|
| DAMPER |
|
|
YES |
|
|
|
|
|
| NO |
| UNPLUG IGNITER | NO | REPLACE VALVE |
IGNITES WARMS UP AND |
| MEASURE VOLTAGE AT VALVE | |||
|
| TERMINALS. (SEE INSET) |
|
| |
GLOWS RED |
|
|
|
| |
|
|
|
|
| |
PILOT VALVE OPENS | NO |
| YES |
|
|
| REPLACE IGNITER - |
|
| ||
|
|
|
|
| |
|
|
| FLAMEROD ASSEMBLY |
|
|
YES |
|
| REPLACE VALVE |
|
|
|
|
|
|
| |
TURN GAS ON, | NO |
| MEASURE VOLTAGE TO |
| CHECK |
PILOT BURNER LIGHTS? |
| NO | |||
| VALVE, VOLTAGE MUST BE AT | TRANSFORMER LINE | |||
|
| ||||
|
|
| LEAST 19.5 VAC. |
| VOLT SUPPLY |
|
|
| YES |
|
|
YES |
|
| REPLACE IGNITER - |
|
|
|
|
|
|
| |
|
|
| FLAMEROD ASSEMBLY |
|
|
MAIN VALVE OPENS? | NO |
| REPLACE IGNITER SENSOR |
| REPLACE VALVE, |
| AND RETAIN. | NO | |||
|
|
| RESTART | SAVE OLD IGNITER | |
|
|
| TROUBLESHOOTING SEQUENCE. |
| SENSOR FOR |
YES |
|
| DOES MAIN VALVE OPEN? |
| SERVICE |
|
|
|
|
| |
|
|
| YES |
|
|
SYSTEM ON |
|
|
|
|
|
|
|
| DISCARD OLD IGNITER |
|
|
|
|
| SENSOR |
|
|
NOTE: DO NOT ATTEMPT TO REPAIR THE FLUE DAMPER DRIVE / DEVICE OR MECHANISM. | |||||
IF THE UNIT IS DEFECTIVE REPLACE ENTIRE ASSEMBLY. | |||||
|
|
| Page 14 |
|
|
