Trane S8X2A040M3PSC

SSAAFFEETTYY WWAARRNNIINNGG
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning
equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person
could result in death or serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that
are attached to the equipment.
May 2022
SS88XXBB--SSVVXX000011--11AA--EENN
Upflow/Downflow/Horizontal
Gas-Fired, 1–Stage and 2–Stage Induced Draft Furnaces with
High Efficiency Motor
UUppffllooww,, DDoowwnnffllooww,, HHoorriizzoonnttaall RRiigghhtt//LLeefftt
Single Stage Two Stage
S8B1
S8X1
S8X2
S8B1A026M2PSC
S8B1A040M3PSC
S8B1B040M2PSC
S8B1B060M4PSC
S8B1B080M4PSC
S8B1C080M5PSC
S8B1C100M5PSC
S8B1D120M5PSC
S8X1A026M2PSC
S8X1A040M3PSC
S8X1B040M2PSC
S8X1B060M4PSC
S8X1B080M4PSC
S8X1C080M5PSC
S8X1C100M5PSC
S8X1D120M5PSC
S8X2A040M3PSC
S8X2B060M4PSC
S8X2B080M4PSC
S8X2C080M5PSC
S8X2C100M5PSC
S8X2D120M5PSC
NNoottee:: This Installation, Operation, and Maintenance is used for multiple furnace
families. Models may have a “T” in the 12th digit designating they meet
California less than 40 ng/J (NOx) emissions requirements.
NNoottee:: Graphics in this document are for
representation only. Actual model may
differ in appearance.
S8XB-SVX001-1A-EN
Installation, Operation, and Maintenance

Trane S8X2A040M3PSC Specifications

General

Model	S8X2A040M3PSC
Type	Gas Furnace
Heating Capacity	40, 000 BTU
Efficiency Rating	80% AFUE
Blower Motor	PSC
Fuel Type	Natural Gas
Ignition Type	Hot Surface Ignition
Weight	120 lbs
Warranty	10-Year Limited
Dimensions (H x W x D)	17.5
Stages	Single-Stage

Summary

Safety Warnings

FIRE OR EXPLOSION HAZARD!

Potential for fire or explosion if safety warnings are not followed.

ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZARD!

Warning about electrical hazards, fire, and explosion.

CARBON MONOXIDE POISONING HAZARD!

Risk of carbon monoxide poisoning due to improper venting.

EXPLOSION HAZARD!

Warning regarding explosion hazards and gas leaks.

ELECTRICAL SHOCK HAZARD!

Caution about electrical shock risks during servicing.

SAFETY HAZARD!

General safety hazard warning.

INSTALLATION WARNING HIGH VOLTAGE MOVING PARTS!

Warning about hazards from high voltage and moving parts during installation.

SHOCK HAZARD!

Specific warning about electrical shock hazards.

Product Specification

Furnace Installation Guidelines

Safety Practices and Precautions

Wiring Diagrams

Furnace General Installation

Electrical Connections

Field Wiring

General Start-up and Adjustment

Preliminary Inspections

Lighting Instructions

Control and Safety Switch Adjustment

Furnace Combustion Air Exhaust Options

Integrated Furnace Control Menu

S8 B1-S8 X1 Control System Menu Single Stage OD

S8 X1 Control System Menu Two Stage OD

S8 X2 Control System Menu Single Stage OD

S8 X2 Control System Menu Two Stage OD

S8 B1 - S8 X1 - S8 X2 Run Test Mode

S8 B1 - S8 X1 - S8 X2 System Status Menu

Setting Airflow

Integrated Furnace Control Display Codes

Fault Code Recovery

Procedures for recovering from furnace fault codes.

Troubleshooting

Status Codes

Error Codes

List of error codes and their explanations.

GETTING STARTED

E01 Fault Code

Troubleshooting flow for fault code E01 (Internal failure).

2.1 Fault Code

Troubleshooting flow for fault code 2.1 (Flame not sensed).

2.2 Fault Code

Troubleshooting flow for fault code 2.2 (Flame lost after sensed).

2.3 Fault Code

Troubleshooting flow for fault code 2.3 (1st Stage Gas Valve not energized).

3.1 Fault Code

Troubleshooting flow for fault code 3.1 (PS1 closed when open).

3.2 Fault Code

Troubleshooting flow for fault code 3.2 (PS1 open when closed).

3.3 Fault Code

Troubleshooting flow for fault code 3.3 (PS2 closed when open).

3.4 Fault Code

Troubleshooting flow for fault code 3.4 (PS2 open when closed).

4.0 Fault Code

Troubleshooting flow for fault code 4.0 (Limit switches).

5.0 Fault Code

Troubleshooting flow for fault code 5.0 (Flame sensed when not expected).

6.1 Fault Code

Troubleshooting flow for fault code 6.1 (Polarity fault).

6.2 Fault Code

Troubleshooting flow for fault code 6.2 (Ground fault).

6.3 Fault Code

Troubleshooting flow for fault code 6.3 (Igniter fault).

7.1 Fault Code

Troubleshooting flow for fault code 7.1 (External gas valve circuit error).

08 Fault Code

Troubleshooting flow for fault code 08 (Flame sense current low).

11 Fault Code

Troubleshooting flow for fault code 11 (Gas valve relay failure).

12 Fault Code

Troubleshooting flow for fault code 12 (Onboard fuse issue).

Constant Torque Motor Troubleshooting

Sequence of Operation S8 B1 S8 X1 S8 X2

1 st Stage Gas Heating

2 nd Stage Gas Heating (S8 X2 Only)

Single Stage Cooling

Two Stage Cooling

Single Stage Heat Pump

Two Stage Heat Pump

Periodic Servicing Requirements

GENERAL INSPECTION

IGNITER

HEAT EXCHANGERFLUE PIPE