Accessing the Maintenance Display

The User Interface Module on the front of the heat pump water heater has a multi-function display that gives information about the status and condition of the operation of the water heater. In power saving mode, the display will be off; momentarily touching any of the buttons above or below the display area will ‘wake’ the display and cause it to light up. The User Display is the default screen viewable during normal operation. A second display mode is available, Maintenance Display, which provides more detail about how the water heater is operating and stores and displays more specific fault messages.

Interpreting the fault code history

Fault code E01 is the newest code detected. If there is a fault shown on the User Display, E01 is the active fault. Faults E02 through E04 are faults that have been detected in the past and may or may not be relevant. If one of these faults is the same as E01, it is an indication that the fault is repeating. If there are multiple operational issues, codes E01-E04 will be helpful in troubleshooting efforts. The fault history can not be cleared or reset. There will always be codes stored whether there is an actual fault or not.

Accessing the Maintenance Display

1.Touch and hold the Up and Down arrows at the same time for three (3) seconds. The display will change to the Maintenance Display mode.

2.A total of ten (10) screens are available in this mode (see Table 2). By using the up arrow to scroll, each screen is available for viewing. The first six (6) screens display system temperatures and the final four (4) show the fault code history. The down arrow can be used to access previous screens.

Table 2: Maintenance Display

 

Screen

Message

Meaning

1

----

Ambient Temperature

Air temperature entering evaporator

2

----

Average Tank Temperature

Weighted average of UT and LT

3

----

Upper Tank Temperature

Thermisitor, outer tank wall

4

----

Lower Tank Temperature

Thermisitor, outer tank wall

5

----

Discharge Temperature

Measured at compressor

6

----

Coil Temperature

Measured at evaproator

7

E01

Fault Code

Newest (active) fault code

8

E02

Fault Code

Historical Fault

9

E03

Fault Code

Historical Fault

10

E04

Fault Code

Historical fault

21

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American Water Heater HPE10280H045DV manual Accessing the Maintenance Display, Interpreting the fault code history

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