1.2.13 Alarm table
Alarm table
Display
Alarm type
Reset
A1
Antifreeze alarm
Manual
Aht
High temperature at start-up (if activated, P20=1)
Automatic
ALt
Low temperature at start-up (if activated, P20=1)
Automatic
d1-2
Defrost operating
-
dF1-2
Problem in defrost
Automatic
E1
B1 sensor
Automatic
E2
B2 sensor
Automatic
E3
B3 sensor
Automatic
E4
B4 sensor
Automatic
E8
B8 sensor
Automatic
ELS
Low supply voltage
Automatic
EHS
High supply voltage
Automatic
EPr
Eprom. error. Unit operating.
Automatic
EPb
Eprom. error. At start-up
Automatic
ESP
Communication failure with expansion module
Automatic
EL 1-2
Problem at fan voltage control
Automatic
FL
Flow switch
Manual
Hc1/Hc2
Compressor maintenance alarm
Automatic
HP1/HP2
High pressure
Manual
Ht
High water temperature alarm
Automatic
LP1/LP2
Low pressure
Manual
PC1
Compressor partialisation (high pressure)
Automatic
tC1
Fan heat switches
Automatic
TP
Phase order fault/phase fault
Manual
User manual
1
Operating instructions µC2 (YLHA 50, 60 and 80)
1.2
23
