Protective functions
Anti-Freezing Protection
The system is fitted with an anti-freezing protection. This prevents the evapora-
tor being covered with ice. Additionally, the system supervises the evaporator.
In case ice formation is detected, the anti–freezer is automatically activated. By
that the compressor and the outdoor unit fan are de-energised, while the indoor
unit fan maintains running at the optional preselected speed.
Fixing the hazard of ice formation and having switched off the compressor for at
least three minutes, the system restarts in the formerly (preselected) mode.
By way of illustration please compare to the figure:
Overload Protection
The system is equipped with an overvoltage protection that should avoid dam-
age to the systems components.
As soon as the system exceeds the permissible stress for three consecutive
seconds, the system will stop every function apart from the indoor unit fan,
which runs further.
If there won’t be an overvoltage metered three minutes later, the system restarts
automatically and resume working with the pre-assigned mode.
In case of tripping the overvoltage protection for overall six times in succession,
the system ceases operating, except the indoor unit fan. After that cutoff, you
should deactivate the system completely by the remote control unit and reboot
it.
While the overvoltage protection is active, the display of the indoor unit shows
the error code E 5. In addition to that, the operation indicator lamp flashes five
times, interrupted by a break of three seconds. If the compressor runs for at
least six minutes at a stretch, the counter for the overvoltage protector will be
reset.
“Evaporator Temperature To High” protection
E5 Error Code:
“Evaporator
temperature too
high protection”
Refer page 105
for further error
code clarifica-
tions.
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