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ACV Prestige Excellence LG Manual

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System Control - ACVMax: 660Y2800 • B
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BLOCKAGE AND ERROR CODES
BLOCKAGE AND ERROR CODES
Codes Description of the fault Solution for the fault
E 01 Failed ignition: The burner failed to light after 5 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.
E 02 False ame: Flame detected prior to ignition.
1. Check good electrical ground connection to unit.
2. Check electrode for pollution and deposition of dirt.
E 03 High Boiler temp. : The boiler temperature exceeds 105°C
Correct condition which caused high temperature or limit to open.
1. Check water ow in the system (radiator valves).
2. Check Pump and pump electrical connections.
E 05 Blower speed: Blower speed not correct or speed signal is not received by ACVMax.
1. Check blower and wiring harness.
2. Under normal condition if actual fan speed is 1000 rpm dierent from set fan speed an error is displayed (after 60sec in
running and after 30 sec. at startup).
3. Only exception when actual fan speed > 3000 rpm at max. PWM.
E 07 High Flue temp.: Flue temperature exceeds high limit.
1. Heat exchanger may require cleaning.
2. Boiler will automatically reset once flue temperature returns to normal range.
E 08 Flame Circuit Error: Flame circuit test failed
1. Turn boiler o.
2. Check and clean the electrode.
3. Check ignition and grounding cables are rmly connected.
E 09 Gas valve circuit error: Gas valve circuit test failed.
1. Check the gas valve and wiring harness.
2. If the problem persists replace the “ACVMax” circuit board.
E 12 Internal Fault: EEPROM misconguration
1. Turn unit o and on to resume normal operation.
2. If the problem persists replace the “ACVMax” circuit board.
E 13 Reset limit reached: Resets are limited to 5 every 15 minutes.
1. Turn unit o and on to resume normal operation.
2. If the problem persists replace the “ACVMax” circuit board.
E 15 Sensor Drift: Supply or return sensor reading has drifted. Check supply and return temperature sensors and wiring harness.
E 16 Supply Sensor Stuck: Supply sensor reading is not changing.
1. Check supply temperature sensor and wiring harness for shortcuts or other defects.
2. Check water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 water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 o and on then press OK to resume normal operation.
E 25 Internal Control Fault: CRC check error. Turn unit o and on to resume normal operation.
… 65 …


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