EMERSON FG7S 80 Single Stage Furnaces Instruction Manual
- June 12, 2024
- Emerson
Table of Contents
EMERSON FG7S 80 Single Stage Furnaces
WIRING DIAGRAM
For Single Stage Furnaces
Refer to the Installation Instructions provided with the furnace for the proper heating and cooling speeds for your application.
| Red LED Flash | Error/Condition |
|---|
Flash codes stored in memory (auto-erased after 14 days)
1| System Lockout (Retries Exceeded)
2| Pressure Switch Stuck Closed
3| Pressure Switch Stuck Open
4| Open High Temperature Limit Switch
5| Flame Sensed>4.25 Seconds with Gas Valve De-Energized
6| Open Flame RO Switch
8| Ignitor Relay Error
10| Open Fuse
11| Ignitor Open
12| Inducer Relay Error
Flash codes NOT stored in memory
7| Low Flame Sense Signal
9| Twinning Fault
Off| Control Failure / No Power / Internal Fault / IRQ Loss
Gas Heating Lockout (Gas valve energized when it should be de-energized)
Or Gas valve De-energized when it should be Energized
Rapid Flash| Reverse Polarity
Continuous On| Normal Operation
If any of the original wire as supplied with the furnace must be replaced, it must be replaced with wiring material having a temperature of at least 105 C.
Use copper conductors only.
Cool Motor SPEED DIPSWITCH SETTING (S1-1, S1-2, S1-3)
| |
1 2 3
|
1 2 3
|
1 2 3
|
1 2 3
| 1 2 3| 1 2 3| 1 2 3|
1 2 3
|
Position
|
OFF OFF OFF
|
ON OFF OFF
|
ON ON OFF
|
OFF ON OFF
| OFF OFF ON| OFF ON ON| ON OFF ON|
ON ON ON
Motor SPEED Cool
|
Y
|
T1
|
T2
|
T3
|
T4
| T1+T2| T1| T1|
T1
Heat Motor SPEED DIPSWITCH SETTING (S2-1, S2-2)
| |
1 2
|
1 2
|
1 2
|
1 2
|
Position
|
OFF OFF
|
ON OFF
|
ON ON
|
OFF ON
Motor SPEED Heat
|
W
|
T1
|
T2
|
T3
|
T4
Fan Motor SPEED DIPSWITCH SETTING (S2-3, S2-4)
| |
1 2
|
1 2
|
1 2
|
1 2
|
Position
|
OFF OFF
|
ON OFF
|
OFF ON
|
ON ON
Motor SPEED Fan
|
G
|
T1
|
T2
|
T4
|
T1+T2
LEGEND:
FIELD WIRING|
---|---
LOW VOLTAGE|
HIGH VOLTAGE|
1041300B
(Replaces 1041300A)
Documents / Resources
|
EMERSON FG7S 80 Single Stage
Furnaces
[pdf] Instruction Manual
FG7S 80 Single Stage Furnaces, FG7S, 80 Single Stage Furnaces, Single Stage
Furnaces, Stage Furnaces, Furnaces
---|---
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