Viessmann Vitotwin 300-W Installation And Service Instructions For Contractors page 129

Fault messages
Fault mes- Cause
sage
"282: G83/ G83/ENS module (power
ENS/GIM" supply unit) has detected a
faulty power state.
"283: Altern' Alternator circuit breaker has
overc trip" responded. Fault in Stirling
engine.
"284: WCS The temperature of the Stir-
overtemp" ling engine is too high.
(cont.)
Remedy
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).
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.
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.
Troubleshooting
Re-
set-
ting
AR
SR
SR
129