Viessmann Vitocal 242-S Installation And Service Instructions Manual page 101

Repairs
(cont.)
External unit, type AWT-AC 241.A10 and A13
B
A
A Fan
B Heat exchanger (evaporator)
C Evaporator air intake temperature
sensor (OAT)
D Evaporator temperature sensor
(OMT)
E 4-way diverter valve
F Electronic expansion valve (EEV)
C
G Compressor head temperature sen-
sor (CTT)
H Liquid separator
K Evaporator refrigerant inlet temper-
ature sensor (OCT)
L Compressor
M High pressure switch (pHi)
Troubleshooting
D
E
F
H
M
K
G
L
101