129
Fault mes-
sage
Cause Remedy Re-
set-
ting
"282: G83/
ENS/GIM"
G83/ENS module (power
supply unit) has detected a
faulty power state.
If the fault is not rectified au-
tomatically in the short term,
check plug connections on
the power supply unit and
control unit, check voltage
(230 V +10 / -15 %), check
frequency (49.5 to50.2 Hz),
check mains impedance
(< 1 Ohm).
AR
"283: Altern'
overc trip"
Alternator circuit breaker has
responded. Fault in Stirling
engine.
Reset circuit breaker (see
page 122). Check plug-in
connection X205, connecting
cables and plugs to circuit
breaker.
Check cable harness.
If the fault recurs, notify
Viessmann Technical Serv-
ice.
SR
"284: WCS
overtemp"
The temperature of the Stir-
ling engine is too high.
Check balanced flue system:
Perform a visual check of
seals between the boiler flue
connection and the heat ex-
changer and between the
heat exchanger and the ring
burner.
Ensure that flue gases are
not being recirculated.
Check plug-in connection
X205, connecting cables and
plugs to thermocouples on
the Stirling engine. If the con-
nections look OK, notify
Viessmann Technical Serv-
ice.
SR
Troubleshooting
Fault messages
(cont.)
5618 294 GB
Service
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