Diagnostic Button Function; Part 10 - Troubleshooting; Error Code Screens - Westinghouse WGRGH20**75F Series Installation, Start-Up, Maintenance, Parts, Warranty

E. Diagnostic Button Function
The water heater control allows the user to review various diagnostic functions, including: Outlet Temperature, Fan RPM, and Error Code
History. Press the button on the display to review various diagnostic functions. Press the
Figure 44 - Press the "D" Button to Review Diagnostic Functions
Display
Ver
Main CPU Software Version
Ht
Hot Water Stored / Tank Temperature
Ot
Outlet Temperature
Gpm Water Flow Rate into Tank
Rpm
Burner Time Hours
H
Burner Time Minutes and Seconds
T
E1 - E9
Table 26 - Diagnostic Function Screen Descriptions

Part 10 - Troubleshooting

A. Error Code Screens
The water heater continuously monitors its own operation. If an error occurs a message will scroll across the display on the front panel and
an error code will display. These error codes assist in troubleshooting system issues, and may enable the user to overcome a problem without
calling for service. If calling Technical Support for assistance, please reference the displayed error code to aid in troubleshooting. Press
turn the water heater OFF and ON to reset an error code.
Error Code Description
E1
E2
Ignition Failure
E3
Flame Loss
E4 Outlet Thermistor Open
E5 Outlet Thermistor Short
E6 Tank Thermistor Open
E7
Tank Thermistor Short
E11
Blower Motor
Detail
Fan RPM
Ignition Cycles
Error Code History
Cause
Abnormal Flame Detected
Water heater does not detect a
flame signal.
Abnormal combustion - Flame
has been lost after it was
detected.
Outlet thermistor is open.
Outlet thermistor has shorted.
The H/E thermistor is open.
The H/E thermistor has shorted.
The DC blower motor has
failed.
or
Example
Ver: 1 Current version of software running on the PCB
Ht: 145 Tank temperature is 145
Ot: 134 Outlet temperature is 134
1.2 Current water flow rate into tank is 1.2 gpm
Rp 4500 Fan is spinning at 4500 RPM
2h
Total burn time is 2 hours, 10 minutes, and 14 seconds
10m 14s
7T Seven total ignition cycles
E1: E4 The most recent error stored is E1. E9 is the oldest.
Call for service. Replace the main controller.
1. Check gas line, ignitor, flame rod.
2. Check wire connection of 22p wire and ignitor wire.
3. Check ignition noise. If fuel supply is low ignition will
make noise.
4. Check gas type and manifold pressure.
1. Check the gas supply.
2. Check the gas valve.
3. Check wire connection fo 22p wire and ignitor wire.
4. Check gas type and pressure.
5. Check power supply for proper voltage.
1. Check the outlet thermistor.
2. Check wire connection of 22p wire and thermistor wire.
1. Check the H/E thermistor.
2. Check wire connection of 22p wire and thermistor wire.
1. Check the DC blower motor.
2. Check wire connection of 22p wire.
buttons to scroll through the functions.
Description
o
F
o
F
Possible Remedies
whl-605 Rev. 002 Rel. 000 Date 1.23.19
43
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