Viessmann VITOCAL 200-G, Инструкция по установке и обслуживанию

Страница: 118 / 208

Fault messages Cause Measures
C8 Safety chain Fault at one of the con-
nected components External safety chain; check
connected components and
circuits (e.g. brine pressure
or jumper)
C9 Refrigerant cir-
cuit High pressure switch,
low pressure switch or
hot gas switch has re-
sponded Check the flow and return
temperature sensors, test
the high pressure (see
page 111), check the primary
and secondary circuits for
pressure and throughput;
ask your local refrigeration
engineer to check the heat
pump, if required
CA Primary pump Primary throughput too
low or none present Check the primary pump
(see page 109); replace, if
required
CB Primary tempera-
ture Primary inlet tempera-
ture below its minimum
level Check the brine circuit for
throughput
D3 Safety chain Fault at one of the con-
nected components External safety chain; check
connected components and
circuits (e.g. brine pressure
or jumper)
D5 DHW SHC Break in jumper
X 6.5
–
X 6.6
Check any possibly con-
nected switching contact or
bridge (connection on the
power PCB)
D7 E heater
K6 Heating element con-
nected to K6 faulty Check heating elements as
per the specifications in the
separate documents
D8 E heater
K7 Heating element con-
nected to K7 faulty
D9 E heater
K8 Heating element con-
nected to K8 faulty
DA Room tempera-
ture sensor HC 1 Short circuit Check the sensor; replace if
required
DB Room tempera-
ture sensor HC 2
DD Room tempera-
ture sensor HC 1 Lead broken Check the terminals; replace
the sensor, if required
DE Room tempera-
ture sensor HC 2
Control unit diagnostics
(cont.)
118
Troubleshooting
55
92
968
GB