Viessmann VITOCAL 222-S Installation And Service Instructions Manual page 101
Type awt-ac 221.a04 to a13
compact heat pumps, split version for heating and cooling operation
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Also See for VITOCAL 222-S:
- Installation and service instructions manual (164 pages) ,
- Installation and service instructions for contractors (160 pages) ,
- User manual (236 pages)
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Repairs
(cont.)
External unit, type AWT-AC 221.A07
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
C
F Electronic expansion valve (EEV)
G Compressor head temperature sen-
sor (CTT)
H Liquid separator
K Evaporator refrigerant inlet temper-
ature sensor (OCT)
L Compressor
Troubleshooting
D
E
F
G
H
K
L
101
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