Question about Grasslin Controls Corp Grasslin 7 Day Timer W/override, 120v

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What are the Ohm, wattage and tolerance values for R1 on PC Board in Grasslin Timer located on top left of board?

Grasslin Controls GM Series 30 Amp GM1 digi 12-1-120

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1 Answer

Defrost timer location

Hello Darren;

My name is Peter. I am a retired field service refrigeration technician.

You did not provide a model number of your unit. The model number is located on a label on the upper inside wall of your fresh food section. So I can only be general.

1.) Control Board - Many of the defrost cycle modes are programed into the main control board.

2.) Mechanical Defrost Timer - Some units with the controls on the top in the fresh food section have a mechanical timer. Here, it is a hole on the left. Using a large flat head screw driver you can trip the timer, turning clockwise one click at a time.

Notice the slotted hole on the left.

Mar 19, 2015 | Refrigerators

1 Answer

I have a GM Series 30amp digital timer. Ineed the resistance, wattage and tolerance for R1 on the pc board. It burnt up.

Common problem...
there are no schematics or repairs available from manufacturer ..

Look close and you will probably see evidence of high heat (darkened connections at the solder) on several other components too.

Frequently, these burned timers are sold on ebay and flea markets because they look functional but have been removed from service...
... If one of these timers is offered for sale, check for evidence of dark solder joints before buying...

GM series timers and defrost timers have 1 year limited warranty.
Occasionally one of the relays will still be operational, and load can run off one relay instead of two relays.


Water Heater Timers Save Money

Mar 09, 2015 | Hardware & Accessories

1 Answer

Have Grasslin GM Series 30 amp timer. R1 resistor is burned out. Can you give me the ohm value and wattage for R1 on the pc board.

R1 is probably different for different models of the timer.

Normally if R1 is burned... look carefully and other nearby parts have signs of burning also.
R1 is the first place you see the overheat problem,,, and that's true with the older and newer models in the GM and Woods series timers, including defrost series.

Contact and see if they offer a schematic and replacement parts sheet... but I've not seen a parts sheet.

The timer is usually taken out of service and replaced once R1 is burned.
Frequently these timers with burned R1 are sold on ebay after they have been removed from service... simply because the timer looks good or repair seems simple.

Replace timer?


Oct 08, 2014 | Hardware & Accessories

1 Answer

Blown resistors

Both resistors are: 1/4w 100 ohm with 5% tolerance (brown, black, brown & gold colors). Best to use the "Metal Film" type because they're more durable than the "Carbon Film" type.

Feb 24, 2014 | Jensen JHT525 System

1 Answer

The clock dial on my grasslin analog timer does not correspond to the time on the "2:00" arrow. how do i realign the clock dial to be in line with the arrow?

I don't know what the 2:00 o'clock arrow is.
KM series Arrowhead is located to right side of timer dial.
To set clock, manually rotate timer dial clockwise until current time lines up with arrowhead

If this is not your timer, then add a comment with description of timer for possible help

Jul 23, 2011 | Intermatic Grasslin KM2ST-2D Timer, 2 Gang...

1 Answer

Grasslin timer instructions

Grasslin timers and manuals
Click timer-categories on left to see drop-down menus

Grasslin electronic time switch
Click on model number and drop-down menu shows manuals

Oct 11, 2010 | V, Inc. 12v Dc Timergeneratortransfer...

1 Answer

Hitachi 43fdx11b green wave on top left and center

Its likely that you did not find all the resistors that were damaged when the original failure occurred. Now you must re-replace the ICs and locate the other damaged resistors. Check all, including those you just replaced. Use a good ohm meter and be certain that all the resistors are gold band tolerant(5%) and of the exact resistance value and wattage.


Feb 15, 2009 | Hitachi 43UWX10B 43" Rear Projection...

2 Answers

HP Scan Jet 5370C

The R105 Resistor in the Australian version of the Scanjet 5370C, if that makes any significant difference, is orange black black gold. I don't have my handy translator so I don't know the impedance. I have no idea of the wattage, however it is about the same size as the R92.

I was hoping that may be my problem, but no such luck.

Good luck with changing the resistor.

Feb 18, 2008 | Office Equipment & Supplies

4 Answers

Need new power/invertor board for Acer AL1711

R1 will be blown, replace it with a 10 ohm resistor. Also replace C6 and C22 with 220uf 25v Capacitors.

Dec 11, 2007 | Acer AL1711 17" LCD Monitor

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