Test   Reset Filter Indicator Light  Alpine
Pressure 134A Low side =[0-5 PSI] , High side [180- 200 PSI] after at least 20' working . Compressor Terminal
Rewire   Timer | 3(N)_ Stripe line    4(Comp)  1(Hot)  2(DefHeater)_Blue |
Relay   Up relay (M_S at bottom): SM=SL=ML=0Ω; Down: SM=SL=infinity and ML=0Ω (no change)
Compressor   C(top), S(left), R(right).C=R=2.5Amps, S=0,05Amp, (C>S>R),
     
    Water solenoid: Blue is for Water, Green is for IMaker
WHIRPOOL Icemaker
Regular: T_H for 15s, if not dump out=>bad T'stat or heater (73.0Ω) or motor (20k*04.5Ω)=> replace a new; V_L, no water filling in =>bad valve, and then L_N = 120V, M_L for Motor (20k*7.3Ω). For Optics Switch :  Optics1, Optics2

a.-Release flapper and door switch > 2blink/ rest 1 second
b._ Press only flapper > light is solid
c._ door switch pressed at no matter with flapper > no light
a+b+c => good sensor    Wiring 
1.Flapper released : light is blinking twice and then off for one second repeatedly=>OK. If no light=> icemaker is in the harvest mode (press freezer door switch=> flashing once/s) or optics bad.
2. Flapper pressed: light is on continuously=> the optics OK; the light blinks once, then a one second delay=>optics bad. Intensive Test Click Here

Dispenser The dispenser motor works under 120 VDC from DISPENSER BOARD through the BR/WH and RD/WH wires.  On the cube position, the BR/WH= positive and RD/WH= negative. Test pink 1_2 (BR/WH_ RD/WH)=+-2.2VDC=56.7Ω= OK; RD/WH_PK=0.3VDC=OK; BR/WH_BL=2.5VDC; PK_BL=14Ω=2.9VDC=OK. If the motor has only two pins=>under 60 Ω is bad.
  Model ED5KVE...   with defrost board W10366605 has Wiring         
  Fan (E) Evaperator is very low high Ω, so just check voltage inlet.(120ACV)
  Thermistor To Room => R=20k*1.9Ω
  MB on top
3(Wh)-2(Br)=24Ω=> Def Heater OK  |WH   BR|  |RD  OR  BK  PK|
  Def 'Stem 2(Br)_5(Pk)=1Ω=> Def T'stat OK
    3(Wh)-5(Pk)=24Ω=> Def Heater+ T'stat OK
  Too Cool or not Cool enough at fridge side: ssor, damper
  Elite Reset Display blinking _ unplug for 9 mns, if not better, replace the display board
KENMORE e Elite French door Wiring
  Too Cool Damper System, sensor
Kenmore Elite (inverter) Code DH : could be defrost sensor, fuse, heating element or circuit board. Need check current at comp. If current low 70 after a while start => low freon
Maytag MFI2269VEM3  Mainboard problem and reset after mainboard replacement or from Utube
GE  Wiring Icemaker Locate L first, then if A=hot, B_D=water valve (180Ω), and A_D=195Ω (?). Motor= 2k*0.5Ω
Dispenser Solenoid=33.5Ω; Motor=3.3Ω, long heating element  23 ohms _ 5.3 Amps]
  Motors Evptor BK_RD=150kΩ (very high Ω, around 1.5W, 12DCV), Cond =R=78Ω, Comp=>Run=4.0Ω , Start=6.0Ω
Diaffer RD_WH=WH_BK=450Ω
  Thermistor To Room => R=20k*2.9Ω
  Heater Def=18Ω (SxS), 42Ω (Fr Door)
  Evap Fan Sensor in small box at bottom controls the fan
Check board WR55X10942  12VDC 153 Ohms, Longer side = Def= closed, shorter side =Comp =open. J4, pins 2-3 =13.5 vdc
     
SS side x side Sensors Room Sensor (F & R) is The same T to test, set 200k, which doubles other=>fail, Cool air, R=200k*29.0+-5
Ambien=4.9Ω; F, room=6.8Ω;
R room ssor+R Def ssor=2.3Ω; F room ssor+F Def ssor=1840Ω
Icemaker  Press test button 8 seconds, release, 5 mns later IM will be filled. To <-2 to make ice? Could be pressed Power Freeze to speed the cooling process. Could be check the water valve, filter to see water problem. If the filter was replaced recently, try dispensing about 6 gallons of water to bleed air from the lines, then press the Test button again.: Top socket_ fuse, Middle socket_Heater, Bottom socket_sensor.
 
Error Codes Fans Vcc_BLK (F), Vcc_BRN (R), Vcc_RED (Cooling). 3 harnesses behind FF board: Upper (Def T'stat: Rd_Bk)=0.9Ω; Middle (Heater: Rd_Wh), Lower(Temp SS: small Yl_Yl), FF E fan (Rd_Yl). Evap fan = Red_Blk=  Ω /12DCV. 12dcv is available on port 13V (CN75_gray color)
 FrchDoor RS267LASH  errcode   Compressor fan=77.0Ω, Cond fan =81Ω, E fan (Red_Black)=108Ω
  Dispenser  Auger=4Ω
  Valve Dispenser=398Ω, I/M=391Ω
  Reset In case display not turning on (demo mode), press Power Freezer To button _ Power Fridge To button for 8 seconds. For help call 800-SAMSUNG
  Heater,fan Ice pipe=44.4ΩC, Def=49Ω, Water tank (R)=1655Ω, FF heating element =4300Ω port 71 11 70ohm 3 149 0hm
SS Fr door FF Frosted Lift whole panel including under soft panel, if possible melting frost underneath to loose it. Marking the fan blade to test fan. #7-CN70 _ Orange-CN71=FZ heater; #5-CN70_Orange-CN71=FF heater. FF fan (Rd_Bk)=2kΩ.
Quicktest1 No water or Reset water filter (Model Long Filter)
Quicktest2 Icemaker Model Before March 2008, Icemaker is replaced, must replace circuit board. After March 2008 is ok.
  Fan smallsize  
  Heater, fan Freon Problem: T high side>150 F continuously, low side>90 F, capilary>100F, head comp>110F
KitchenAid Evap fan replacement  Mod MFI2569VEM2
LG manual Icemaker Press and hold the test button (10S)  until the fingers move, release it, it will fill water.
  Valve Icemaker Valve= water dispenser=385Ω
     
FRD   wiring Mod FLSC238DS6)  icemaker (5303918344)
     
Maytag control board replace  Model MFI2569VEM2