MAYTAG MG2R Gas Furnace Instruction Manual

June 12, 2024
Maytag

MAYTAG MG2R Gas Furnace
MAYTAG MG2R Gas Furnace

For 80+ and 90+ 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

WIRING DIAGRAM

WIRING DIAGRAM

**LEGEND:

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MG2R Gas Furnace, MG2R, Gas Furnace, Furnace
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