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Defrost timer wiring diagram for a Universal Nolin UL MH 50

This unit was aquired used missing the defrost timer. Have a grasslin DTAV40 replacement timer but wiring diagrams with it assume you have the old timer still in place. Thanks Steve

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 5 Answers

SOURCE: Whirlpool EHT 141JK 'fridge

failedcompressor start relay or bad commpessor

Posted on Apr 02, 2008

zeusfaber
  • 247 Answers

SOURCE: evaporator fan jams with ice buildup from drain

Could be that, or it could be the temperature sensor on the evaporator - if that goes, then as soon as the freezer starts a defrost cycle, it will think it's got the evaporator hot enough and will start cooling again.

Suggest you let the freezer thaw out then, with a voltmeter connected across the terminals on the board which connect to the sensor, turn the freezer on and see if the sensor reacts sensibly to the evaporator cooling down. It's usually done with a thermistor, but just for the moment, I can't remember whether it's usually a PTC or an NTC.

That way, if it is the sensor, you'll be spared the expense of replacing a serviceable pcb.

A.

Posted on Apr 13, 2008

  • 1 Answer

SOURCE: GE Refrigerator Defrost heaters are shorted to ground.

My oven is turning on by itself. It will heat up to around 200 - 250 degress and shut off. I have made sure the knob is in the "OFF" position. Any ideas?

Posted on Dec 22, 2008

  • 1 Answer

SOURCE: Need a wiring diagram for a GDL20kcsbs refrigerator

i need a digram for a small refrigerater called sheft thye wiring for it

Posted on Dec 27, 2008

Sea Breeze
  • 4654 Answers

SOURCE: Need a wiring diagram for a Whirlpool ED5VHEXTQO1

I will give the wiring diagram a try but your refrigerator has a simple defrost timer that is most likely the reason for your problem. Give me a few moments and I will give you a photo. Inside the fresh food compartment and behind the control panel is where the timer is located. Sea Breeze

Posted on Oct 23, 2009

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1 Answer

Looking for wiring diagram for this refrigerator,


why isnt anyone giving any details tonite???,,,make model year and problem,we r not mind readers

Jul 29, 2015 | Refrigerators

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Grasslin timer


Which timer?
Grasslin is very old company with many timer models, once owned by GE and sold to Intermatic, and there is still a european branch of grasslin for the 50 cycle electric market in eurtope and asia, vrs 60 cycle in us.
Copy following link to help identify timer:
http://waterheatertimer.org/Intermatic-timers-and-manuals.html
Add a comment and describe timer.

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Tl24 wiring diagram


1) Copy following link:
http://waterheatertimer.org/How-to-wire-timers.html

2) Add a comment Feb 2013 and describe timer in detail

Feb 07, 2013 | Intermatic Grasslin KM2ST-2D Timer, 2 Gang...

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Need manual for timer dtsx-240-hc


More information is needed.
Review options below:

1) Add a comment and describe timer in detail for best possible answer.

2) DTSX timer appears to be older-style GE/Grasslin or Intermatic/Grasslin/Frost King defrost timer with selectable voltage and F 3 1 2 4 N X wiring terminals.
Open following links to identify timer and download possible manual
http://waterheatertimer.org/Intermatic-timers-and-manuals.html#defrost
http://waterheatertimer.org/pdf/DTMV40-instruction-manual.pdf
Additional resources explaining more about defrost timer operation:
http://waterheatertimer.org/Paragon-timers-and-manuals.html#8145

3) Tork makes DTS series timers with 1, 2 and 4-channels:
Each channel can be programmed separately to control different loads with different on-off schedules.
Timer clock is 120Volts, but dry switch terminals can be wired to control any voltage load.
http://waterheatertimer.org/Tork-Digital-timers-and-manuals.html#DTS

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1 Answer

For a church HVAC ysem, we need detailed instructions on programming a Grasslin 2 channel, 7 day, 24 hour digital clock. Ned Spencer Programming the Grasslin is a tough job. Together with an...


Open following link to identify timer module:
http://waterheatertimer.org/Intermatic-timers-and-manuals.html#GM40AVE
Link for FMD 2-channel Intermatic timer
http://waterheatertimer.org/pdf/fmd-50-setpoint-programming-guide.pdf
1-channel FMD Intermatic timer
http://waterheatertimer.org/pdf/GM40AVE-digital-timer-programming.pdf

FMD timers are complex to program, and if timer does not program correctly, then check voltage and polarity of circuit. These timers typically have 1 year limited warranty and can be affected by power surge.
If you have 2-channel timer, then each contact on relay will turn on-and-off at different schedules.
Make sure you don't wire both legs of a 240Volt circuit to to different relays, or the circuit will not turn on-off as expected. To control 240V, just turn off one leg using one of the relays.

If your exact timer does not show, add a comment and describe everything about the timer buttons and appearance, and I will search my files for possible manual.
Grasslin timers were made by GE for many years, and now Intermatic owns the product line.

Jul 11, 2011 | Intermatic Grasslin KM2ST-2D Timer, 2 Gang...

1 Answer

How to set the time and which is on out or in


pins IN = timer ON
pins OUT = timer OFF
Slide-switch must be pushed to right for timer to work
If dial is not rotating, wiring is incorrect (see below for wiring)
__________________________________________
1e82fb8.jpg

Grasslin and Paragon both offer multiple-gang timers.

Grasslin manual says:
" For example, to turn lights ON at 5:00pm and OFF at
11:00pm, leave inward the 18 trippers between 5 and
11 on the "pm" side of the dial.

Link to Grasslin manual

Wiring timer:
Timer black goes to Hot wire
Timer red (or blue) goes to Load
Timer white goes to Neutral (if no neutral, then connect to bare ground)
If timer dial does not rotate, black and red wires are reversed

Oct 08, 2010 | Intermatic Grasslin KM2ST-2D Timer, 2 Gang...

1 Answer

TROUBLE REPLACING OEM TIMER - UNIVERSAL ELECTRONIC FAN TIMER


Hi, you should be real close with the universal timer and the factory OEM. On the new control board, if you have 24 volts to the board, you should have 24 volts from R to ground or to Common. I know that on most all control boards the voltage in is 120volts as you will have terminals for L-1 and L-2 to run the high voltage controls from the board and all of the thermostat control terminals in a row, R,G,Y, W, C, and so on are 24 volts. 120 volts is stepped down to 24volts control and you say you have nothing out. Make sure you have 120volts in. You are calling this a timer board, is this a heat-pump defrost board with the 3 settings and pin to defrost the unit at 30,60,and 90 minute times? This is what it sounds like. If all was terminated per diagram, you would have the 24 volts required to fire this unit. These defrost timer boards require high voltage to them as well. Even though the board is a new board and you know for a fact that it is wired properly, it may be a defective board. I have seen this many times in my years as a tech. I have shorted new boards out by static electricity and by mis- wiring one. You can kill power and look at the back side of the board to see if this has happened. Sometimes you will find that they missed a solder point on the back side not completing a circuit through the board. To give you more ideas, I would need to see the diagram, or if you could send me the model, serial, and name of your unit. The board number would help also. Check out what I have said and get back to me on this. I will wait to hear.
Shastalaker7

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