1.7.4 Fault codes for the air conditioning unit
Code
Description
11 / 21 / 31
Discharge temperature exceeded
12 / 22 / 32
High-pressure switch, outdoor fan
thermal switch or compressor mod‐
ule thermal switch (depending on
model)
13 / 23 / 33
Low-pressure switch
14
Indoor fan thermal switch
15 / 25 / 35
Repeated cold start-up or suction
temperature < ‑25 °C
41
Gas control 1 or resistor 1 fault
42
Gas control 2 or resistor 2 fault
43
Resistor stage 3 fault
44
Resistor stage 4 fault
45
Fault in economiser or hot water
coil (outdoor supply, water return
sensor)
46
Smoke detector, high temperature,
or supply temperature >80 ºC
91
Ambient sensor open or short
circuited
92
Internal sensor not calibrated
93
Communication error
94
fault with AL terminal connected
95
S5 digital sensor not detected
96
S6 digital sensor not detected
97
S7 digital sensor not detected
98
S8 digital sensor not detected
99
Digital outdoor sensor not detected
N O T E
• Indicator 1 blinks if a fault code between 0 and 90 is displayed.
• Indicator 1 also blinks if fault code 93 is displayed.
1
User manual
1.7
Placing the unit out of service for a planned stoppage or breakdown.
10
