Table of Contents
Advertisement
I FLASH - INDOOR FAN [_ELAY
_O_FED
(HEATING)
2 _S
- OF_-NN
OF UME
SW_rCH
3 _
- _
SFJV_OR
iNE_J_TES
FLAME
WffH
CLOSED
GAS
VALVE
HEATING
F-
F-
4 FL_..S
- L_IT SWITCH
CYCLED
4 _MES ON
t--
CALL FK)R HEAT
I 5 _
- E_rK3N
L(_r2,KOLrF _
(No _nJ_n ',_
t5 mW"_tses)
MOTOR FAULT
_
_nat
f_rn _"te I_I
Effect
t
7 FLASHES - OF_F&NG OF
ROLLObq" _TCH
8_-_
FAULT
I
9 FLASHES - SOFTWARE
LOCKOUT
1
t
IGC H_.4HVOLTAGE
TRAt, L _F.R
CREATES A
'lO,(X_O VO£T SPARK FOR 5
8ECONOS
.{
'Wf
FROM
BASE CONTROL
BOARD ENERGIZES
'W'
ON IGC - 1 MINUTE
LOCK-ON
±
COMBUSTION RELAY ON IGC 18 ENERGIZED
I
J
_
_
CORRECT _
TO TE'RM_,L
'Jl' ON
EXCHANGER
Yes
(5 N.AS__S
OF LED)
LEGEND
IDM -- Induced-Draft
Motor
iGC -- Integrated
Gas Unit Controller
i
I
NOTE: Thermostat
Fan Switch
in the
"AUTO" position.
VALVE FOR 5 8_X_
r
[
IGC SAFETY LOGIC WILL 8_JT
VHo@
OFF C4.8 VALVE AND SPARK
Yes
H_8 8E8_
REDUG_E) DUE TO L_
8V_TCH
TRIPS) E_C WILL _
BLOWER
RELAY
No
.½
_
SAFETY LOG_ S_
OFF GAS V_
t
t
STOP&
]
45 SECOND B_OWER 8H_
IMP'LAY
(DFJ.AYEXTENDED
BY 5 Sa_CON{3_3 FOR EACH LIMIT8-'Wff{_._I
TRIP
MAXIMUM DELAY: 3 MINUTES)
SUBTRACT 5 _
(C_
ANC/FHER 5 _)
FROM
FAN ON TIME DELAY
Fig. 9 - IGC Service
Analysis
Logic
]
(07014
35
Advertisement
Table of Contents
Troubleshooting
