27
6. APPENDIX (continued)
Problem
Error
codes
Description
Solution
Antifreeze protection Cold mode
E07
Water output temperature < 4°C
Stop the heat pump, empty the
condenser risk of freezing
Communication problem
E08
No communication between the printed
circuit board and the user interface
Check the connectors - see the wiring
diagram
Level 1 antifreeze protection
E19
2°< Water temperature < 4°
and Air temperature < 0°
Stop heat pump operation, empty the
condenser to avoid freezing, by default
the heat pump starts the filtration pump
to avoid icing over
Level 2 antifreeze protection
E29
Water temperature < 2°
and Air temperature < 0°
Stop heat pump operation, empty the
condenser to avoid freezing, by default
the heat pump starts the filtration pump
and the heat pump to avoid icing over.
Fan motor fault
F031
Motor jammed or faulty connection
Check free rotation; check CN97/DC
connectors; replace the motor
Fan motor fault
F051
Faulty connection
Check the DCFAN/CN97 connector;
replace the motor
Exterior temperature too low
TP
Operating limit reached
Stop the heat pump
Содержание Powerline 81504
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