Coopra Advanced Heating Technologies Installation manual E40C
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Fan: For the first 10 seconds of this state the fan is
running at the ignition speed (2900 rpm). After that time
the heat demand program defines the fan speed.
Ionisation: If the ionisation fails, a restart is made,
providing this is not the third time within the burner
demand. If this is the third time, the regulation runs into
lock-out, flashing indication ‘2’.
5.5. Post-purge
Fan on - Gas valve off - Glow plug off - Ionisation off
Fan: At end of heat demand (burner stop) the regulation
runs into post-purge. The fan runs at the last demanded
speed.
Pump: The pump is controlled by the heat demand of the
firmware.
5.6. Pump after run
Fan off - Gas valve off - Glow plug off - Ionisation off
Pump: The pump remains running, mixing the system
water for a certain period of time.
5.7. Lock-out
Fan on/off - Gas valve off - Glow plug off - Ionisation
off - Alarm contact on
A “lock-out” situation can be reset by pressing the
Set/Reset button on the display for more then 1 second.
Fan: At the beginning of being in this state the fan is
running (2700 rpm), only if the reason was a temperature
problem. After a fixed time of 1 minute, the fan switches
off.
Pump: The pump is running over the central heating
circuit at high speed. The 3-way valve (if applicable) was
directed in position of central heating circuit.
Alarm: The alarm on the display is on (flashing LED).
5.8. Frost protection
If the flow sensor temperature becomes below 8°C (and if
there is no heat demand) the pump is on and runs over
the heating circuit. The display shows continuous ‘o’.
If the flow temperature goes below 3°C, the burner is on in
low load. When the return sensor temperature is above
10°C, the frost protection is finished.
When an outdoor temperature sensor is connected to the
boiler and the outside temperature becomes below –4°C,
the pump is on and runs over the heating circuit. This
situation is removed at an outside temperature of –2°C.
5.9. System pressure monitoring
The boiler is in working mode when the system water
pressure is between 0,5 and 3.5 bar.
If the water pressure is less than 0,5 bar (low level), the
regulation blocks with a ‘P’ and actual water pressure on
the display. The status shows alternately the ‘P’ and the
normal status on the display.
This block is automatically removed when the water
pressure goes above 0,6 bar.
If the water pressure is greater than 3.5 bar, the regulation
blocks with a ‘P’ and actual water pressure on the display.
The status shows alternately the ‘P’ and the normal status
on the display.
This block is automatically removed when the water
pressure goes below 3.4 bar.
5.10. Flue temperature sensor
If the flue gas temperature sensor becomes above 100°C,
the burner is blocked (off). The display status is
continuous ‘A’.
When the flue gas temperature goes below 80°C, the
blocking action will be removed automatically.
If the flue gas temperature goes above 105°C, the
regulation runs into lock-out, flashing indication ‘A’
If the flue temperature sensor measures a temperature
below –25°C, the regulation runs into lock-out, flashing
indication ‘4’
5.11. Limiter
If the flow temperature goes above 105°C, when the
burner is off, the regulation will lock with a continuous ‘H’.
Burner action is restored automatically when the actual
flow temperature is 5°C below the setpoint (default 82°C).
If the flow temperature goes above 105°C, when the
burner is on, the regulation will lock-out with a flashing ‘H’.
5.12. Glow plug protection
The glow plug protection counter is incremented at each
ignition. This counter is decremented per minute.
If this counter is too high burner start is delayed to protect
the glow plug for overheating by to many start attempts
repeatedly.
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