Goodman GMH8 Series Gas Furnace Manuals

Manuals and User Guides for Goodman GMH8 Series Gas Furnace. We have 1 Goodman GMH8 Series Gas Furnace manual available for free PDF download: Service Instructions Manual

Goodman GMH8 Series Service Instructions Manual

Goodman GMH8 Series Service Instructions Manual (62 pages)

Goodman & Amana Brand 33 3/8" 80% Modified Two Stage Gas Furnaces

Brand: Goodman | Category: Furnace | Size: 1 MB

Table of Contents

Table of Contents

2
- Service Instructions
  1
- Important Information
  3
- Product Identification
  4
- Accessories
  11
- Operating Instructions
  16
  - To Turn off Gas to Appliance
    16
  - For Your Safety
    16
- Product Design
  19
  - Location Requirements and Considerations
    20
- System Operation
  39
- Troubleshooting
  40
  - Polarization and Phasing
    42
- Maintenance
  43
- Servicing
  46
Servicing

48
- Checking Voltage
  49
- Checking Wiring
  49
- S-3A Thermostat and Wiring
  49
- S-3B Heating Anticipator
  49
- Capacitance Check
  50
- Checking Capacitor
  50
- Checking Transformer and Control Circuit
  50
- Checking Air Circulator Blower Motor (Psc)
  51
- Checking Duct Static
  51
- S-15A Resistance Check
  51
- Checking Temperature Rise
  52
- Checking Auxiliary Limit Control
  53
- Checking Primary Limit Control
  53
- S-302 Checking Flame Rollout Control
  54
- Checking Gas Valve (Redundant)
  55
- Checking Main Burners
  55
- Checking Orifices
  55
- Induced Draft Blower Motor
  55
- Checking Gas Pressure
  56
- Checking for Flashback
  59
- Checking Hot Surface Ignitor
  59
- S-310 Checking Pressure Control
  59
- Checking for Delayed Ignition
  60
- Checking Integrated Ignition Control Boards
  60
- High Altitude Application (Usa)
  60
- S-314 Checking Flame Sensor
  61

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