Rheem RGFG - NORMAL OPERATION CODES

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74

TABLE 23

NORMAL OPERATION CODES

LOW COOLING MODE

CODE AT DUAL 7-SEGMENT DISPLAY OF IFC: C

DESCRIPTION: Indicates low cooling for legacy systems only. This code is not used in communicating

systems.

C

DESCRIPTION: This code indicates the furnace is in cooling mode (any stage) for communicating systems)

high stage only for legacy systems.

Table of Contents

Installation Instructions1
Table of Contents2
Safety Information3
Installation Check List5
General Information6
Important Information about Efficiency and Indoor Air Quality7
Location Requirements and Considerations8
- Clearance-Accessibility9
- Site Selection9
- Dimensions and Clearance to Combustibles10
- Ducting11
That Contain, or Produce, any of over VENTING and COMBUSTION AIR PIPING12
- Installation with Pre-Existing Vent Systems12
- Joining Pipe and Fittings12
- Cementing Joints13
Non-Direct Vent Pipe Installation14
Installation Guidelines17
Direct Vent Pipe Installation18
- Concentric Terminations20
- Location Requirements24
Condensate Drain/Optional Neutralizer28
Gas Supply and Piping30
- Gas Valve31
- Lp Conversion33
- Setting Gas Pressure34
Electrical Wiring35
Accessories37
- Electronic Air Cleaner37
- Humidification and Dehumidification37
- Other Accessories39
- Typical Wiring Accessories for Communicating Residential Systems39
High Altitude Installations in the U.s41
- Rgfg- High Altitude Conversion41
- Lp Gas at High Altitude Elevations43
- Furnace Installation with Non-Communicating High Efficiency Premium Cooling or Heat Pump Systems44
- Zoning Systems44
Integrated Furnace Control45
- Seven Segment Display45
- Vac Thermostat Inputs47
- Special Configuration - Comm T-Stat and Non-Comm Condenser47
- Memory Card49
  - Rules for Writing, Distribution and Arbitration of Multiple Copies of Furnace Shared Data for Communicating-Capable Furnaces49
- Replacing the Furnace Control51
- Dipswitches52
- Furnace Operation Using Non-Communicating Modulating55
  - Modulating and Two-Stage T-Stats55
- Communicating Systems58
  - Wiring for Communications58
  - Startup for Systems Configured with Communications59
- Furnace User Menus60
- Dual-Fuel Operation65
Start-Up Procedures66
- Sequence of Operation68
- Setting Input Rate68
Maintenance69
- Annual Inspection71
- Replacement Parts71
- System Operation Information71
- Wiring Diagram71
Troubleshooting Chart72
Troubleshooting Chart73
Normal Operating Codes (Table 23)74
Furnace Fault Codes with Descriptions and Solutions (Table 24)75
Wire Diagram - Stepper / Servo Modulating Valve (Fuel Codes Ha or Hb)91
Thermostats92
- Non-Communicating Thermostats92
- Thermostat Wiring (with Wiring Diagrams)92
Applications96
- Modulating, Touch-Screen, Non-Communicating Thermostat ((-)Hc-Tst412Mdms)96
- Troubleshooting105
Communicating Thermostats106
- Hc-Tst501Cmms Programmable Communicating Thermostat108
- Hc-Tst550Cmms Full Color, Programmable Communicating Thermostat112
- Viewing Furnace User Menus with the (-)Hc-Tst550Cmms Thermostat113
- Changing Furnace Setup Items on the (-)Hc-Tst550Cmms Thermostat114

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