Goodman *MH8 Installation Instructions Manual page 34

*(M, D)H8 W
IRING
STEADY ON = NORMAL OPERATION
0
OFF
1 FLASH
1
2 FLASHES = PRESSURE SWITCH STUCK CLOSED
2
3 FLASHES = PRESSURE SWITCH STUCK OPEN
3
4 FLASHES = OPEN HIGH LIMIT
4
5 FLASHES = FLAME SENSE WITHOUT GAS VALVE
5
6 FLASHES = OPEN ROLLOUT OR OPEN FUSE
6
7 FLASHES = LOW FLAME SIGNAL
7
8 FLASHES = CHECK IGNITER OR IMPROPER GROUND
8
RAPID FLASHES = REVERSED 115 VAC POLARITY/VERIFY GND
C
COLOR CODES:
YL YELLOW
OR ORANGE
PU PURPLE
GR GREEN
BK BLACK
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
D
IAGRAM
WARNING: DISCONNECT POWER BEFORE
SERVICING. WIRING TO UNIT MUST BE
PROPERLY POLARIZED AND GROUNDED.
24 VAC
HUMIDIFIER
C G R W Y
5 MIN
2 STG MODE
WH
7 8 BL
4 5 6
1 2 3
BR
INTEGRATED
CONTROL MODULE
BL
RD
2
1
PARK
BK
BK 24V
115V
XFMR
WH
BK
GR
DOOR SWITCH
SWITCH LOCATED IN BLOWER
COMPARTMENT ON SOME MODELS
RD RD
PRIMARY LIMIT
RD
YL
YL
BR
BL
WH
PM C HI
1 2 3
HOT
SURFACE
2 STAGE
IGNITER
GAS VALVE
PU
PU PU
ROLLOUT LIMITS
(SINGLE CONTROL ON SOME MODELS)
= CONTROL FAILURE
=
SYSTEM LOCKOUT (RETRIES/RECYCLES EXCEEDED)
NOTES:
1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS.
PK PINK
2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING.
BR BROWN
3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE
REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE
WH WHITE
RATING OF AT LEAST 105
BL BLUE
4. BLOWER SPEEDS SHOULD BE ADJUSTED BY INSTALLER TO MATCH THE INSTALLATION
GY GRAY
REQUIREMENTS SO AS TO PROVIDE THE CORRECT HEATING TEMPERATURE RISE AND THE
RD RED
CORRECT COOLING CFM. (SEE SPEC SHEET FOR AIR FLOW CHART)
5. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C. AND LOCAL CODES.
C
G
Y
TO
MICRO
W
R
AUXILIARY
LIMITS
XFMR (3)
BR
XFMR-H
FP
15 PIN PLUG
EAC-H
ON SOME MODELS
BLOWER COMPARTMENT LINE-H
BURNER COMPARTMENT
DOOR
24 VAC
SWITCH
HUMIDIFIER
NO
C
PRESSURE
YL YL
SWITCH
WH
BK
BK
JUNCTION
BOX
INDUCED DRAFT
BLOWER
TO 115 VAC/ 1/60HZ
POWER SUPPLY WITH
FLAME
OVERCURRENT PROTECTION
SENSOR
DEVICE
INTERNAL TO
INTEGRATED CONTROL
°C. USE COPPER CONDUCTORS ONLY.
34
INTEGRATED
HUMIDIFIER
CONTROL MODULE
XFMR (6)
GND
GND (8)
C2
GAS
MVC (9)
HI VALVE
MVH (12)
M1
MVL (2)
ID BLOWER
PRESSURE
SWITCH
NO
PS (10) C
PSO (4)
HLI (7)
HLO (1)
RO2 (11)
RO1 (5)
24 VAC
40 VA
TRANSFORMER
115 VAC XFMR-N
FLAME SENSOR
HOT SURFACE
IGNITER
IGN
IGN-N
ID
BLWR
IND
IND-N
CIRCULATOR
BLWR
CIR-N
ELECTRONIC
AIR CLEANER
EAC-N
LINE-N
JUNCTION BOX
DISCONNECT
L GND N
LINE-N
GND
LINE H