Technical information

Location of controls (YLCA / YLHA 40)
A
Temperature sensor
(B3)
H
Low-pressure switch
(LP)
B Fan I Compressor
C Flow switch (FS) J
high-pressure switch
(HP)
D
NTC water outlet sensor
(B2)
K Four-way valve
E Indoor heat exchanger L
Outdoor heat exchang‐
er
F
NTC water inlet sensor
(B1)
M Pressure sensor (B4)
G Pump
Parameter tables
The following tables show the parameters and their values, divided into groups:
Parameter level codes Supervision variables
D Direct R/W Read/write parameter
U User R Read-only parameter
S Super user
F Factory
1 Technical Information
1.13 Operating instructions
56