Dealing with malfunctions
FIGHTER 1140
60
If the operating disturbance cannot be rectified by means of the above,
an installation engineer should be called.
Alarm indications on the display
HIGH RETURN TEMP.
1.0
High return temp.
This information is shown when the return sensor on
the heating medium measures a higher value than
that set in menu 2.7. or higher than 58 °C on the
return pipe when hot water charging.
The following alarms are automatically reset when the
temperature has increased/reduced by 2 °C
Max condensor flow temp
This information is displayed when the flow tempera-
ture between the condensor and immersion heater
reaches 65 °C or more.
MAXCONDFLTEMP
1.0
High hotgas
This information is displayed when hot gas in the heat
pump exceeds 135°C.
This may be due to:
■ Defective/incorrect setting on the expansion valve
The alarm is reset when the temperature drops below
90 °C. Becomes continuous after three repetitions
within 240 minutes.
HIGH HOTGAS
1.0
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