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14 

 

5.

 

Thermostat checking 

 

Automatic Reset Thermostat 
Definition: 

The thermostat will automatically cut out power system when the water in tank rises 

to 45   5        o  he   the thermostat, follow the steps below: 
 -Disconnect cables as in the picture. 
- Set multimeter to Ohm range "Ω" or " ))))  
- Check on poles.  

 

 

 

 

 

 

 

 

 
 

 

 

 

 

 

Check 

 

Result

 

Cause 

 

Action 

 

Pole -Pole  

"Beep" signal " 

)

)

)

) "  

Pass  

No action  

No signal "OL" or (∞ Ω) 

 

Connector open 

 

Automatic reset* 

 

 

Remark: "OL" = Over Load for Digital multimeter, "

 Ω" = Over Load for Analog multimeter.  

*Note: Please ensure that step 1-3 (See  hapter “System  onfirm”) has been  ompletely  he  ed  

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 

     IS 45E/E-2 ,  IS 60E/E-2 

            IS  35E/E-2

 

Содержание IS E

Страница 1: ...1 Service Manual IS_E IS_E 2 Author Mr Apiwat Limrueangwattanakul Date 25 March 2013 Revision version 1 0...

Страница 2: ...duct information 4 Technical data 5 Wiring Diagram 6 Troubleshooting 7 Root clause analysis 9 1 Heating Elements checking 9 2 TRIAC checking 10 3 Flow Switch checking 11 4 PCB Control checking 13 5 Th...

Страница 3: ...3 Warning Warning This service manual is suitable for qualified Technicians only Warning Disconnect power supply before open cover...

Страница 4: ...d The unit switches the power on once the flow volume reach 1 5 2 l min The Power light C indicates that the unit is switched on If the temperature adjustment rotary B switch is turned to the left it...

Страница 5: ...external thread Electrical connection 1 N PE 220 240V 220 V kW 3 5 4 5 6 0 230 V kW 3 8 4 9 6 6 240 V kW 4 2 5 4 7 1 Recommended cable size Sqmm 4 0 6 0 6 0 Recommended circuit breaker A 20 30 35 Min...

Страница 6: ...eating element B Electronic control set C ELSD Circuit D Single Triac Set E Thermal cut out TCO F Button Board G Current Leakage Sensor Type IS A Heating element B Electronic control set D Single Tria...

Страница 7: ...ater not hot PCB failure Check PCB Missing water connection Check reed switch Reed switch failure Check Triac set Triac failure Problem Condition Cause Correction Reconnect inlet outlet Power lamp ON...

Страница 8: ...uce water flow ELSD cut off Reed switch failure Water temperature not constant Change pump to smooth pressure type Check reed switch Irregular water flow Triac failure Check Triac set Water leak Wrong...

Страница 9: ...Check Meter Result Cause Action Pole Pole Beep signal or 0 Element Pass No action No signal OL or Element Broken Change New Heater Pole GRD Beep signal or 0 Element short to tank Change New Heater No...

Страница 10: ...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...

Страница 11: ...l find two different ways to check the flow switch 3 1 Option 1 Set unit at vertical direction Set Multi meter to Ohm range or and unplug the reed switch connector from the printed circuit board PCB a...

Страница 12: ...and unplug the reed switch connector from the printed circuit board PCB and check Reed Switch as in the pictures Check Result Cause Action Pole Pole Beep signal Pass No action No signal OL or Reed swi...

Страница 13: ...13 4 PCB control checking Check Result Cause Action Visual Electronic equipment is burned Short circuit Change new PCB Damage is not visible PCB failed Change new PCB Visual check...

Страница 14: ...s below Disconnect cables as in the picture Set multimeter to Ohm range or Check on poles Check Result Cause Action Pole Pole Beep signal Pass No action No signal OL or Connector open Automatic reset...

Страница 15: ...ion and turn the knob to the OFF position 2 Connect electricity wiring to the unit and connect the water valve then supply water to the system to check for leaks but keep the main breaker to the unit...

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