Troubleshooting - Honeywell 7800 Series Installation Instructions Manual

7800 SERIES RM7896D RELAY MODULE

TROUBLESHOOTING

Use Table 3 to identify fault code numbers, possible system failure and recommended troubleshooting procedures.
120V ALARM
BURNER MOTOR
(BLOWER)
5 SECOND IGNITION
(EARLY SPARK TERMINATION)
1 120V, 50/60 Hz POWER SUPPLY. PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION AS REQUIRED.
DO NOT CONNECT ANY WIRES TO UNUSED TERMINALS.
2
INITIATE
POWER
32-00208-01
BURNER
CONTROLLER/LIMITS
AIRFLOW
INTERLOCK
5 SEC. INTERRUPTED
PILOT/IGNITION
MAIN FUEL
VALVE(S)
RECTIFYING
FLAME ROD
Fig. 4. Wiring the RM7896D.
00 00
TIMED
STANDBY START PURGE
POWER POWER
Fig. 5. RM7896D operating sequence.
Q7800
G 12
L2 13
3 14
4 15
(L1)
5
16
6 17
2
7
18
8 19
9 20
DELAYED
10 21
MAIN VALVE
F
22
MASTER
SWITCH
00 10 10
PFEP
4 OR 10 SEC MFEP
POWER POWER POWER
PILOT
PILOT PILOT
PURGE PURGE PURGE
MAIN
MAIN MAIN
ALARM
ALARM ALARM
4
10 5 SECONDS
8
L1
6 7
6
FOR DIRECT SPARK IGNITION
(OIL OR GAS)
IGNITION
10
TRANSFORMER
L2
8
9
MAIN VALVE
L1
(HOT)
1
L2
M10450
POST PURGE
RUN 60 SEC STANDBY
POWER POWER POWER
PILOT
PURGE
MAIN
ALARM
9
21
6
M10451A