Rheem 80MDV SERIES - Fault Codes: Limit and Pressure Switch Issues

Rheem 80MDV SERIES

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68

Diagnostics

TABLE 13 (continued)

802V FAULT CODES WITH DESCRIPTIONS AND SOLUTIONS

Table of Contents

Default Chapter1
- Installation Instructions1
1 Table of Contents2
2 General Information3
- Receiving4
- California Proposition 65 Note4
- Checklist5
3 Safety Information6
- Warnings6
- Important Information about Efficiency and Quality7
4 Location Requirements8
- Site Selection8
- Clearance - Accessibility8
- Dimensions and Clearance Table10
5 Ducting11
- Upflow Installations11
- Horizontal Units13
6 Combustion and Ventilation Air14
- Combustion Air Requirements14
- Overtemperature Safety Switches14
- Furnace Located in an Unconfined Space15
- Furnace Located in a Confined Space15
- Combustion Air from Attic18
- Venting19
- B-1" Vertical Venting19
- Special Vent Systems (SVS)20
- Power Vent Systems22
- Existing Vent Systems22
7 Gas Supply and Piping23
- Gas Supply23
- Gas Piping24
- Figure 1924
- Gas Pressure25
- Gas Valve25
- Setting Gas Pressure26
- Supply Gas Pressure Measurement26
8 Lp Conversion27
- Nox Models27
- Orifice Installation27
9 Electrical Wiring28
- Electrical Connections28
- Reversing the Electrical Connection28
- Thermostat29
10 Accessories30
- Field Installed Option Accessories30
- Electronic Air Cleaner30
- Humidifier30
- RXGW-C01 4-Inch Flue Adapter30
- Filters30
- RXGW-B01 Chimney Adapter30
- Twinning30
- Air Temperature Sensors30
- Standard 3" Flue Connection30
- Figure 2631
11 High Altitude32
- Natural Gas at High Altitudes32
- Orifice Ordering Information32
- LP Gas at High Altitudes34
12 Startup Procedures35
- To Start Furnace35
- To Shut down Furnace35
- Sequence of Operation35
13 Integrated Furnace Control36
- Humidification/Dehumidification37
- Dipswitches40
- Model Data Card44
- Dual Seven-Segment Display45
- Pushbutton47
- Supply & Outdoor Air Temperature Sensors49
- Auxiliary Inputs50
- Thermostat Wiring Diagrams51
  - Legacy AC Condensing (Non-Communicating)53
  - Legacy Heat Pump (Non-Communicating)55
14 Timing Diagram, Field Selections & Adjustments58
- Adjusting or Checking Furnace Input58
- Setting Input Rate59
15 Airflow60
- Limit Control61
- Flame Roll-Out Safety Switches61
- Pressure Switch61
16 Maintenance62
17 Filters62
18 Lubrication62
19 Maintenance63
- System Operation Information63
20 Annual Inspection63
21 Replacement Parts63
22 Diagnostics64
- Normal Operation Codes64
- 802V Fault Codes with Descriptions and Solutions65
- Lockout74
- Replacing the Furnace Control74
- Diagnosing Blower Motor Issues74
- Diagnosis Flowchart77
- Diagnostic Chart77
- Wiring Diagram79

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