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Service Manual
AQ 35,45 E-2
Author: Mr. Apiwat Limrueangwattanakul
Revision: version 1.0
Page 1: ...1 Service Manual AQ 35 45 E 2 Author Mr Apiwat Limrueangwattanakul Revision version 1 0...
Page 2: ...Checking 9 3 Flow Switch Checking 10 3 1 Set unit at vertical direction 10 3 2 Set unit to upside down turn 180 direction 11 3 3 The other way to activate Flow Switch 12 4 PCB Control Checking 13 5 Th...
Page 3: ...3 Warning Warning This service manual is suitable for qualified Technicians only Warning Disconnect power supply before open cover...
Page 4: ...lly controlled The flow is switched on and off by using a water valve The unit switches the power on once the flow volume is sufficient The Power light indicates that the unit is switched on Any desir...
Page 5: ...r Water Connector G 1 2 Power Supply 1 N PE 220 240 V Rated Power 220 V kW A 3 5 15 29 4 5 20 5 Rated Power 230 V kW 3 8 16 5 4 9 21 3 Rated Power 240 V kW 4 2 17 5 5 4 22 5 Cable Size Sq mm 2 5 4 0 2...
Page 6: ...ng Diagram Type AQ E 2 A Heating element B Electronic control set Phase Cut C ELSD Circuit Option D Single Triac Set E Thermal cut out TCO F Button Board Option G Current Leakage Sensor Option G E A D...
Page 7: ...hot Water leak Tight connectors Connector has loosen Wrong installation Reinstallation Lamp broken Lamp cable broken Check change the Lamp Check change Lamp cable Power lamp not ON But water Hot Water...
Page 8: ...Set Multi meter to Ohm range or and check as show in the pictures Check Meter Result Cause Action Pole Pole Beep signal or 0 Element Pass No action No signal OL or Element Broken Change New Heater Po...
Page 9: ...tures Note L1 line H1 Heater GRD Ground Check Meter Result Cause Action L1 H1 Beep signal or 0 Triac short circuit Change new No signal OL or Triac Pass No action Check Meter Result Cause Action L1 GR...
Page 10: ...t standby Flow Switch Reed SW still open circuit as no water supply Set Multi meter to Ohm range or and unplug the reed switch connector from the Control PCB and check Reed Switch as in the pictures C...
Page 11: ...Switch Reed SW become close circuit Check Result Cause Action Pole Pole Beep signal or 0 Pass No action No signal OL or Reed SW contact closed Change new one Remark OL Over Load for Digital Multimeter...
Page 12: ...w Switch Check Result Cause Action Pole Pole Beep signal Pass No action No signal OL or Reed SW not activate Check Magnet Remark OL Over Load for Digital Multimeter Over Load for Analog Multimeter Pol...
Page 13: ...13 4 PCB Control Checking Check Result Cause Action Visual Electronic equipment burn PCB short circuit Change new one No visible damage PCB failure Change new one Visual check...
Page 14: ...e down lower than 45 it become connect power system again In case temperature high up with any abnormal case until 7 it will fully cut out the power The technician must fix Root cause first before res...
Page 15: ...but keep the main breaker to the unit turned off 3 Check leak point by visual If have some leak please change O Ring or gasket If Power Lamp on mean Triac Damage Must change new one 4 Continuous suppl...
Page 16: ...16 7 AQ_E 2 Parts List...
Page 17: ...ble Action Thermostat 16A For Copper Tank 1 26 6801 267307 Thermostat Bracket 1 30 6201 267393 Control PCB PC CB With ELSD 1 31 6201 267389 Button PCB DS 1 35 6301 165511 Plastic Nipple Adapter 1 Effe...
Page 18: ...mostat For Copper Tank 45A 1 26 6801 275556 Bracket For Thermostat 25A 45A For Copper Tank 1 30 6201 267393 Control PCB PC CB With ELSD 1 31 6201 267389 Button PCB DS 1 35 6301 165511 Plastic Nipple A...
Page 19: ...Tank Dai 54 mm 1 25 6202 275484 Double Action Thermostat For Copper Tank 45A 1 26 6801 275556 Bracket For Thermostat 25A 45A For Copper Tank 1 30 6201 267393 Control PCB PC CB With ELSD 1 31 6201 2673...
