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LP-532 REV. 8.13.2014
LP-532 REV. 8.13.2014
Description/Part #
MetalFiberPremixBurner/
7850P-011
Check Point
(Main PCB)
N/A
Function
Thecomponentsuppliestheheatsourcebymixingandcombustingtheairand
gas.
Failure Event
①Unabletoinitialize/sustaincombustion.
②Sootoccursonthesurfaceofburner.
③Gasleakageoccursfromburner.
Eects
①Abnormalcombustion.
②Unstableamegeneration.
③Ignitionfailure.
Error Code N/A
Diagonostic Visualinspection:Unstableameconditionsduringoperation.
Color/WireNumber N/A
Description/Part #
BLDC Fan / 7850P-002
Check Point
(Main PCB)
CN4
Function
Supplies ir and fuel to the burner.
Failure Event
① Abnormal noise occurs at the fan.
② Abnormal fan speed(RPM).
③ Poor connection.
Eects
① Abnormal combustion.
② Abnormal noise occurs.
③ The unit does not operated.
Error Code
Er 41
Diagonostic
① Check vent blockage
② Check BLDC fan wiring for proper connection
③ Check voltage range using a multimeter.
Color/WireNumber
[BLDCFAN]
GND(blue)ⓒ:connector②,30vDC
Fanstartcoil(white)ⓔ:connector④,30vDC
Speedfeedbacksignal(yellow)ⓓ:connecotr
⑥
,30vDC
DC14V(red)ⓑ:connector③,14vDC
Power(black)ⓐ:connector
⑤
,30vDC
1.RatedSpecications
- Motor type : DC BRUSHLESS MOTOR
-RatedVoltage:Vs=24V/Vc=12V
-WorkingVoltage:Vs=10~24V/Vc=12±1.2V
-WorkingAmpere:As=140~800/Ac=17±1.7
- Control System : PWM
Chapter 2 Components description Chapter 2 Components description
CN4