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11
11.1
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0311720_SUF_120-500_III_UKUK_V2.0 , 2017-08-01
Troubleshooting
Errors and warnings
The water heater can have three different kinds of errors and warnings:
•
General errors (see section 11.1.1), which are not displayed
•
Displayed errors, which are divided in two different groups:
-
Lock out errors: when the cause is removed, you can reset the error to resume
operation. The displayed code and the back-light of the display blink.
-
Blocking errors: when the cause is removed, the error resets automatically to
resume operation. The code is displayed continuously and the back-light of the
display blinks.
Errors are reported on the display as follows:
-
Line one: an error code and a brief description. The code consists of a letter
and two digits.
-
Lines two, three and four: a long description, alternating with a recommended
action. See the figures. The first shows a possible error, the second shows the
appropriate checking action.
•
Displayed warnings (see section 11.1.3)
Note
It is possible to view the error history of the water heater, refer to Error history (see
section 9.2.2).
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