Alutherm heating A 170, Installation, User And Service Manual

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ALUTHERM | Boilers 49 ALUTERM A 170 - 300 | Installation, user and service manual | instructions for user
Heating
Alutherm A 170 - 300
Errors (hard and soft lockouts)
Hard
Lockout
Code
Description Cause of the fault checking and fi nding a solution for the fault
E1 Failed ignition The burner failed to light after 3 ignition
attempts.
1. Check gas supply to boiler.
2. Check Ignition cable connection in control box.
3. Check electrode for defects, and distance
between the pins.
4. Check gas valve and electrical connections
to gas valve.
E2 False fl ame Flame detected prior to ignition. 1. Check good electrical ground connection to unit.
2. Check electrode for pollution and deposition of dirt.
E3 High boiler
temperature
The boiler temperature exceeds 105°C.
Correct condition which caused high
temperature or limit to open.
1. Check water fl ow in the system (radiator valves).
2. Check Pump and pump electrical connections.
E4 APS failed zero position
check
Air pressure switch closed at appliance
start.
1. Check the draft over the appliance Air intake and fl ue
outlet when at rest. Switchpoints Airpressure switch:
On at 0,4 mbar, Off at 0,25 mbar.
E5 Blower speed Blower speed not correct or speed signal
is not received by MAXSYS.
1. Check blower and wiring harness.
2. If during start the APS switch does not close the
air fl ow is not enough.
3. The APS closing pressure diff erence druring start
should be over 40 Pa.
4. Under normal condition if actual fan speed is
1000 rpm diff erent from set fan speed an error
is displayed.
5. Only exception when actual fan speed >
3000 rpm at max. PWM.
E6 Air fl ow/Airpressure Switch open during apliance run: APS
opened more then 5 times during heat
demand.
1. Check the Air inlet / fl ue outlet for any obstructions.
2. Check if the fl ue system is sensitive to backdraft / Wind.
E7 High Flue temp Flue temperature exceeds high limit. 1. Heat exchanger may require cleaning.
2. Boiler will automatically reset once fl ue temperature
returns to normal range.
E8 Flame Circuit Error Flame circuit test failed. 1. Turn boiler off .
2. Check and clean the electrode.
3. Check ignition and grounding cables are fi rmly connected.
E9 Gas valve circuit error Gas valve circuit test failed. 1. Check the gas valve and wiring harness.
2. If the problem persists replace the “MAXSYS” circuit board.
E 12 Internal Control Fault EEPROM misconfi guration 1. Turn unit off and on to resume normal operation.
2. If the problem persists replace the “MAXSYS” circuit board.
E 13 Reset limit reached Resets are limited to 5 every
15 minutes.
1. Turn unit off and on to resume normal operation.
2. If the problem persists replace the “MAXSYS” circuit board.
E 15 Sensor Drift Supply or return sensor reading
has drifted
1. Check supply and return temperature sensors and wiring
harness
E16 Supply Sensor Stuck Supply sensor reading is not
changing.
1. Check supply temperature sensor and wiring harness for
shortcuts or other defects.
2. Check waterfl ow and the temperature balance in the
system, because CH supply temperature does not change.
E 17 Return Sensor Stuck Return sensor reading is not
changing.
1. Check return temperature sensor and its position, check
wiring harness for shortcuts or other defects.
2. Check waterfl ow and the temperature balance in the
system, because CH return temperature does not change.
3. Failure may happen at low output capacity when
supplying from a big tank!
E 18 Sensor Failure Supply or return sensor reading
changed very rapidly.
Check supply and return temperature sensors and wiring
harness.
E 21 Internal Control Fault A / D conversion error. Turn unit off and on then press OK to resume normal operation.
E 25 Internal Control Fault CRC check error. Turn unit off and on to resume normal operation.
E 30 Supply Sensor Shorted A short circuit has been detected in the
boiler supply temperature sensor circuit.
1. Check supply temperature sensor and wiring harness for a
short circuit.
2. If necessary replace the sensor, or the wire harness.
3. After fi xing the problem, reset the appliance and resume
normal operation.