Fault messages
Error
code
Cause
Remedial measures
E1
High pressure detected
n
Check installation conditions (free air inlet/outlet)
n
Check fan and fan motor
n
Check high pressure switch (resistance should be close to 0.
If the value is infinitely high, the high pressure switch must
be replaced).
n
Check the control board
E2
Low pressure detected
n
Check low pressure switch (resistance should be approxi-
mately 0. If the value is infinitely high, the low pressure
switch must be replaced)
n
Check for gas leakage
n
Check the control board
E5
Voltage not within permissible
range
n
Ensure a stable voltage between 180V-255V
E8
Temperature too high on the
hot gas side
n
Check installation conditions (free air inlet/outlet)
n
Check fan and fan motor
n
Check for gas leakage
n
Check the hot gas sensor
EA
Temperature at the air outlet
too high
n
Check installation conditions (free air inlet/outlet)
n
Check fan and fan motor
Eb
Ambient temperature not
within permissible range
n
Ensure ambient temperatures between 12-38°C
P0
Communication malfunction
between display and control
board
n
Check wiring between display and control board (WCTIL)
n
Check the display
n
Check the control board
P1
Air inlet sensor malfunction
(A7/yellow)
n
Check sensor and wiring to control board
n
Replace if no error was found
P2
Air outlet sensor malfunction
(A2/brown)
P3
Hot gas sensor malfunction
(A5/red)
P5
Suction gas sensor malfunc-
tion (A6/black)
P6
Evaporator sensor malfunc-
tion (A4/green)
P7
Humidity sensor malfunction
(A8/white)
For more, see the next page
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