Shut-Off Codes - REMEHA Gas 310 ECO Technical Information

16.2 Shut-off codes

Code Description
Insufficient air transport during pre-ventilation.
The boiler is locked after 5 restarts (6 starts) with code 08
b )*
(see section 14.4).
T is higher than T
return
more than 10 minutes (and the boiler has been running at
b @$
minimum load for 10 minutes).The shut-off is lifted when T
is less than or equal to T
Maximum acceptable ascension speed of the boiler block
temperature has been exceeded. The boiler shuts down for
10 minutes, after 5 consecutive start attempts within one
b @%
heat demand command the shut-off is recorded in the failure
register as a fault, the boiler does not lock out/go into failure
mode.
If minimum gas pressure switch LD is connected (optional):
b @^
minimum gas pressure undershot. The shut-off is lifted when
the gas pressure returns.
b @8 Fan not running
b @9 Fan continues to run or signal incorrect
Maximum acceptable difference between flow and return
temperature has been exceeded. The boiler shuts down for
150 seconds, after 20 consecutive start attempts within one
b #)
heat demand command the shut-off is recorded in the failure
register as a fault, the boiler does not lock out/go into failure
mode.
Air pressure differential sensor short circuited; after 4 restarts
b 38
the shut-off goes into failure mode
Air pressure differential sensor open; after 4 restarts the shut-
b 39
off goes into failure mode
b $# One or more parameters are out of limits.
b $5 Hydraulic pressure sensor short circuited
Supplied By www.heating spares.co Tel. 0161 620 6677
+ 2° (e.g. 93°, if T
flow return
+ 3°, e.g. 92°.
flow
57
Cause/Check
- Air supply or flue gas discharge for
blockages/ installation faults
- Air pressure differential switch and
connections.
- Flow and return sensors have been
is 90°) for
swapped
- Flow and return pipes have been
return
swapped.
- Whether heating pump is running
- The water flow through the boiler
- Water pressure.
- Gas supply (is gas valve open?)
- Is switch set correctly?
- Wiring.
- Fan defective
- Fan cable or connector is corroded,
resulting in absence of voltage or
control signal
- Check the fan cable connectors on
both the fan side and the automatic
control unit side
- Fan electronics defective
- High natural draught
- Whether the heating pump is operat-
ing
- The water flow through the boiler
- Water pressure
- Check the connecting cable of the
air pressure differential sensor
- The air pressure differential sensor
is defective or not connected
- Check the air pressure differential
sensor connecting cable for short-
circuiting, etc.
- Air pressure differential sensor is
defective
The parameters in the memory of the
control unit are incorrect.
- Check the hydraulic pressure sensor
connecting cable for short-circuiting,
etc.
- Hydraulic pressure sensor is defec-
tive