REMEHA Gas 310 ECO Technical Information page 55

%@ Maximum flue gas temperature has been exceeded. The
b
boiler shuts down for 150 seconds, followed by a restart. If the
flue gas temperature rises 5° above the maximum flue gas
temperature, a lockout follows with code 52 (see section
14.4).
61 Air pressure differential sensor not opening
b
^@ If hydraulic pressure sensor has been connected (optional):
b
water pressure is too low. The control unit shuts down when
the minimum water pressure is reached. The shut-off is lifted
when the water pressure returns and the control unit returns
to normal operating status.
88 Shut-off input is open. When the input is closed, the shut-off is
b
lifted.
($ Maximum acceptable difference between boiler shut-off tem-
b
perature and flow temperature has been exceeded. The boiler
shuts down for 10 minutes, after 5 consecutive start attempts
within one heat demand command the shut-off is recorded in
the failure register as a fault, the boiler does not go into failure
mode.
(( Boiler release contact is open.
b
table 25 Shut-off codes
62560.indd 55 62560.indd 55
- The set maximum flue gas tempera-
ture
- Boiler adjustment
- Boiler for fouling.
Air pressure differential sensor not
opening Check the following:
- Is the air pressure differential switch
defective
- Has the wiring short circuited
- Check for signs of external thermal
draught in the flue gas discharge
duct.
- Refill boiler/system to the correct
pressure
- Sensor defective
- Wiring defective
- Hydraulic pressure sensor not con-
nected but has been activated.
Remove the cause of the shut-off.
- Flow
- Pumps
- Three-way valves
- Boiler release contact on butterfly
valve not made
- Boiler release contact on terminal
strip not connected (if boiler release
contact is not used)
55
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