Locking Codes - ACV WaterMaster 25 Installation, Operation And Maintenance Instructions For The Installer And The User

LOCKING CODES

Codes Description of the fault
E 01 Failed ignition: The burner failed to light after 5 ignition attempts.
E 02 False flame: Flame detected prior to ignition.
E 03 High Boiler temp. : The appliance temperature exceeds 105°C
E 05 Blower speed: Blower speed not correct or speed signal is not received by ACVMax.
E 07 High Flue temp.: Flue temperature exceeds high limit.
E 08 Flame Circuit Error: Flame circuit test failed
E 09 Gas valve circuit error: Gas valve circuit test failed.
E 12 Internal Fault: EEPROM misconfiguration
E 13 Reset limit reached: Resets are limited to 5 every 15 minutes.
E 15 Sensor Drift: Supply or return sensor reading has drifted.
E 16 Supply Sensor Stuck: Supply sensor reading is not changing.
E 17 Return Sensor Stuck: Return sensor reading is not changing.
E 18 Sensor Failure: Supply or return sensor reading changed very rapidly.
E19 Flame Failure: Flame failure during start up phase
E 21 Internal Control Fault: A / D conversion error.
1. Check gas supply to appliance.
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.
1. Check good electrical ground connection to unit.
2. Check electrode for pollution and deposition of dirt.
Correct condition which caused high temperature or limit to open.
1. Check water flow in the system (radiator valves).
2. Check Pump and pump electrical connections.
1. Check blower and wiring harness.
2. Under normal condition if actual fan speed is 1000 rpm different 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.
1. Heat exchanger may require cleaning.
2. Appliance will automatically reset once flue temperature returns to normal range.
1. Turn appliance off.
2. Check and clean the electrode.
3. Check ignition and grounding cables are firmly connected.
1. Check the gas valve and wiring harness.
2. If the problem persists replace the "ACVMax" circuit board.
1. Turn unit off and on to resume normal operation.
2. If the problem persists replace the "ACVMax" circuit board.
1. Turn unit off and on to resume normal operation.
2. If the problem persists replace the "ACVMax" circuit board.
Check supply and return temperature sensors and wiring harness.
1. Check supply temperature sensor and wiring harness for shortcuts or other defects.
2. Check waterflow and the temperature balance in the system, because CH supply temperature does not change.
1. Check return temperature sensor and its position, check wiring harness for shortcuts or other defects.
2. Check waterflow 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 !
Check supply and return temperature sensors and wiring harness.
Flame loss after start up of the appliance.
1. Check the flue system for blockage and check the adjustment of the appliance (CO2 high 8,8 +/-0,2%, CO2 low 8,6+/-
0,2% measured with front casing open).
2. Also check the Ignition / Ionisation rod ( distance to the burner / pollution)
Turn unit off and on then press OK to resume normal operation.
WaterMaster 25 - 35 - 45 - 70 - 85 - 120 : A1006482 - 664Y7300 • D
Solution for the fault
EN
FR
NL
ES
IT
DE
PL
RU
en
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