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Rheem Manuals
Water Heater
RTG2-42
Troubleshooting manual
Rheem RTG2-42 Troubleshooting Manual
Tankless
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Also See for RTG2-42
:
Specifications
(2 pages)
,
Use & care manual
(36 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Specifications Common to All Product Lines
Product (Model) History
Sequence of Operations
Sensors and Safety
Oxygen Depletion Sensing System Operation
How to Reset the Four (4) Hour ODS Timer
Overheat Film Wrap
Heat Exchanger Thermistor
Maintenance Panel Display
Clearing the Fault History
Adjusting the Burner Control Assembly (Printed Circuit Board)
How to Check Manifold Gas Pressure
Program Chip Adjustment
Changing the Maximum Temperature Setting to 140
Changing the Maximum Temperature Setting to 120
Error Codes
Diagnostic Points on Printed Circuit Board
Thermistor Resistance Chart
Fan Speed Chart
Rtg2-42
Wiring Diagram
Printed Circuit Board
Rtg 53
Wiring Diagram - RTG 53
Printed Circuit Board - RTG 53
Rtg 66
Wiring Diagram
Printed Circuit Board
Error Code 11 (RTG66 Only)
Error Code 51 (RTG 66 Only)
Error Code 61 (RTG 66 Only)
Error Code 65 (RTG66 Only)
Code 65 Water Volume Control Fault
Error Code 66 (RTG66 Only)
Rtg 74
Wiring Diagram - RTG 74
Printed Circuit Board - RTG 74
MIC-180 & EZ Link
MIC-180 Printed Circuit Board
Error Code 03 (MIC-180 & Ezlink Only)
Test Run Mode
MIC 180 Maintenance Mode Table
Maintenance Information Mode
2Nd Generation Flame Rod Chart
Troubleshooting
Troubleshooting Format and Example
Unit will Not Power on
Error Code 00
Warning Code 05
Warning Code 10
Error Code 11
Error Code 12
Error Code 13
Error Code 14
Code 14 Overheat Film Wrap Activated
Error Code 15
Error Code 16
Error Code 21 (Indoor Models Only)
Error Code 24
Error Code 29
Error Code 31
Error Code 31
Error Code 32
Error Code 33
Error Code 34
Error Code 35
Error Code 38
Error Code 51
Error Code 52
Error Code 61
Error Code 65
Code 65 Water Volume Control Fault
Error Code 66 (RTG66 Only)
Error Code 71
Error Code 72
Error Code 76
Error Code 79
Error Code 80/81
Error Code 82
Code 76 Communication Fault with Remote
Code 79 Fan Motor Current Fault
Error Code 90
Error Code 99
Warning Code IL
Warning Code P1
Disassembly and Repair
St Generation 7.4 Product Series
Printed Circuit Board (PCB)
Disassembly/Repair 1St Generation 7.4 Series
Air Filter Switch
Water Inlet Solenoid
Hot Water Outlet
Transformer
Fan Assembly
Proportional Gas Flow Regulator
Burner Plate Cover
Burner Assembly
Igniter and Igniter Probes
Flame Rod(S)
Heat Exchanger Thermistor
Parts
Parts Exploded View for RTG2-42PV and RTG 53PV
Parts Exploded View for RTG 53X
Parts Exploded View for RTG 53DV
Parts Exploded View for RTG 66DV
Parts Exploded View for RTG 74PV and GT 199PV
Parts Exploded View for RTG 74DV and GT 199DV
Parts Exploded View for RTG 74X and GT 199X
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Quick Links
1
Specifications Common to All Product Lines
2
Error Codes
Download this manual
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
Tankless Gas Water Heaters
Second Generation
Indoor, Outdoor and Direct Vent
Up to 199,000 BTU
Includes RTG2-42, RTG53, RTG66 and RTG74 models
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This manual is also suitable for:
Rtg53
Rtg66
Rtg74
Svc 810
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