Mikrofill Ethos RS 350, Техническая документация инструкция

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OPERATING INSTRUCTIONS
26 TECHNICAL DOCUMENTATION
HISTORY MODE
• To access history mode, press and hold until the display shows ‘Bu 0’.
• Press the button and the display will flash ‘Hi 0’.
• The error code will then automatically be displayed after a few seconds.
• The index number can be cycled using the buttons.
• To exit history mode, press and hold the button.
POSSIBLE ERROR CODES
continued on page 27...
ERROR CODE
01
02
03
05
07
08
09
13
15
16
17
18
30
31
32
33
34
37
DESCRIPTION
Flame lockout after several ignition
attempts.
False flame signal.
High limit temperature.
Fan speed signal not recognised.
Flue gas temperature sensor limit
exceeded.
Flame circuit error / loss of flame.
Gas valve circuit error.
Reset error.
Supply / return limit error.
Stuck at test error - supply sensor.
Stuck at test error - return sensor.
Cracked sensor test error.
Flow temperature sensor short
circuit.
Flow temperature sensor open
circuit.
DHW sensor short circuit.
DHW sensor open circuit.
Low incoming mains voltage.
Water pressure too low.
RESOLUTION
The boiler has attempted to fire but has not registered an ionisation
signal. If the burner is not lighting, then check for an ignition spark and
that the gas valve is opening. If the burner is lighting, then the ionisation
signal is not being recognised. Check the ionisation probe, cap and
cable for continuity and cleanliness. Also, check for continuity on the
condensate trap earth pins.
The boiler has detected an ionisation signal when not firing. Check the
ionisation probe, cap and cable for continuity and cleanliness.
The boiler flow temperature has exceeded the high limit temperature.
Check for a lack of pressure in the system or a lack of flow, and confirm
pump circulation.
A fan speed signal is not being received when the fan is being
powered. Check the tacho cable running from the fan to the main
PCB, and confirm that the fan is operating.
The flue gas temperature has exceeded the limit temperature. Check
the heat exchanger for blockages and for cleanliness. Also, check for
system flow.
The ionisation signal has been lost during operation. Check for a lack of
gas, poor combustion and rectification of the ionisation signal including
the ionisation probe, cap and cable.
The gas valve has failed the circuit test. Check the wiring connections
and replace either the valve or cable.
The reset has been operated more than five times in fifteen minutes.
The boiler has failed the temperature sensor drift test. The sensor
readings have passed outside the allowable limits.
The sensor reading has not changed by ± 0.25°C for 24 hours. The boiler
will automatically restart and a second test is carried out lasting 240
minutes. If both tests fail, the boiler will go into a lockout condition. If
either test passes, then the boiler will continue to operate.
The sensor has detected a physical crack, replace the sensor.
The flow temperature sensor is registering a short circuit. Check the
connection to the sensor and replace the sensor if necessary.
The flow temperature sensor is registering an open circuit. Check the
connection to the sensor and replace the sensor if necessary.
The DHW sensor is registering a short circuit. Check the connection to
the sensor and replace the sensor if necessary.
The DHW sensor is registering an open circuit. Check the connection to
the sensor and replace the sensor if necessary.
The incoming voltage has dropped below 157 V. Investigate and
rectify the incoming mains voltage issue.
The internal pressure sensor has detected that the water pressure has
dropped too low. Check the water pressure and increase it if
necessary. Check the sensor for a blockage.