Wayne EHG - Page 19

19
EHG SERIES WITH A HONEYWELL S89F PRIMARY IGNITION CONTROL
TROUBLESHOOTING GUIDE
MOTOR DOES NOT START
1. CHECK VOLTAGE INPUT TO BURNER, 120 VAC
DIAGNOSE REASON FOR ABSENSE OF
VOLTAGE
2. CHECK FOR VOLTAGE AFTER BURNER “ON” SWITCH
REPLACE SWITCH
3. CHECK FOR CONTINUITY THROUGH 24 VOLT T
-
STAT IF USED, OR IF BURNER
IS CYCLED ON-OFF THROUGH 120V CIRCUIT, T-T TERMINALS MUST BE
JUMPERED
REPAIR T
-
STAT OR ADD JUMPER AS
NECESSARY
4. CHECK LOW VOLTAGE TRANSFORMER FOR 24 VOLT OUTPUT. 24 VAC
SHOULD BE PRESENT ACROSS TERMINALS 1 AND 3 OF THE MOTOR START
RELAY
5. CHECK FOR 120VAC BETWEEN TERMINAL 4 ON MOTOR START RELAY AND L2
CHECK ELECTRICAL WIRING AND CONNECTIONS,
REPLACE 24VAC 30VA TRANSFORMER IF NECESSARY
6. REPLACE MOTOR.
OK
OK
OK
OK
OK
NO
NO
NO
NO
6. CHECK ELECTRICAL WIRING AND CONNECTIONS
CHECK ELECTRICAL WIRING AND CONNECTIONS,
REPLACE MOTOR START RELAY IF NECESSARY
NO
OK
6. DOES MOTOR SHAFT TURN FREELY?
OK
1.
CHECK BLOWER CLEAERANCE
2. LUBRICATE MOTOR BEARINGS
NO