Question about Fluke 789 Process Meter loop Calibrator

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The display comes up with UnCal when the ambient temp drops below say 15 degrees celsius then when it warms up it works normally.

Is there a temp compensation measuring device inside? or a dry solder joint?

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I'd try to locate the problem using freeze mist. Spray each component for a second or two to see if the unit acts up. Repeat with each component until you find the one that is causing the problem.

Posted on May 21, 2016

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Posted on Jan 02, 2017

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2 Answers

Check engine light flashes only til I reach 30 mph, slow while acceleration, engine temp fluctuated from normal to low on temp gauge, engine rpms seem to drop lower than normal? What is wrong here?


the lowering on the temp gauge indicates a lack of coolant around the bulb of the temp sender unit or a lack of flow around the cooling system
could be from low coolant level or blockage in the coolant system from forming ice ( 16 degrees is -8 degrees Celsius which is below freezing point of water)
I suggest that you check the antifreeze ratio in the cooling system and it should be no less than 50/50 to water
any thing less than 50 % antifreeze in the water will allow the coolant to freeze up which may be your problem
coolant condition should be checked every season as it does deteriorate over time and the % ratio will drop
topping up with normal water is another method of lowering the % point
check with a radiator shop or dealer service center to get the correct % of antifreeze for below freezing conditions and keep it at that point

Dec 20, 2015 | 1999 Toyota Camry

1 Answer

Why is my unit unable to cool my house more than 15 degrees below outside temp?


probably a tonnage issue. unless you have 12 inches of insulation in the attic i like to go with 400 sq. ft. per ton in the houston area. our humidity is so high it will not keep a cold enough coil to wring moisture out of air. all a/c systems are designed to operate at 95 degree ambient. when you get to 102 and more the effienecy drops off quick.

Jul 03, 2014 | Amana Heating & Cooling

1 Answer

Electrolux ewx14440w washer dryer will not heat water


Hello - Hot water is most often 10 degrees colder when it arrives at your machine from when it leaves your hot water heater. In general hot water is 130 degrees Fahrenheit (54.4 Celsius) or above. Warm water is between 110 and 90 degrees Fahrenheit ( 43.3-32.2 Celsius). Cold water is generally between 80 and 60 degrees Fahrenheit (26.7-15 Celsius). If cold water is below 60 degrees Fahrenheit (15 Celsius), clothes are unlikely to be cleaned very well. After confirming information and it proves to be ineffective contact a professional to move forward accurately. Unit could possibly be experiencing a defective timer, temperature sensor, or water valve.

Oct 28, 2012 | Electrolux EW1000i Front Load Washer

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How 2 add r22


The best way is weigh in a charge. of course the type of unit will come into play as split systems have enough refrigerant factory for up to 15 ft lineset or so, depending on units make etc. If a charge exists already and requires adjusting due to lineset length, or repairs etc, youcan simulate a 95 degree day ambient outdoors by restricting the air flow a bit to artificaially raise the head pressure as do low ambient controls, thus bringing the head to around 270lbs in a r 22 system or ambient plus 30 degrees , converted to prressure, so a 95 deg day plus 30=125 deg converted to pressure is 269 lbs, the indoor air temp being clse to 80 degreees helps, the indoor coil will be 40 degrees cooler than the indoor ambient if all is normal and design conditions are met by God or you. If the indoors 75, go to a 35 d
eg coil temp this is ball park, as the subcooling (15 deg)and superheat (10 at the evap coil, 20 at compressor) will need to be monitered along with amp draw and Delta T or temp differntials suply vs return.2_25_2012_2_55_05_am.png

Feb 24, 2012 | Heating & Cooling

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Water too hot


Hot water is most often 10 degrees colder when it arrives at your machine from when it leaves your hot water heater. In general hot water is 130 degrees Fahrenheit (54.4 Celsius) or above. Warm water is between 110 and 90 degrees Fahrenheit ( 43.3-32.2 Celsius). Cold water is generally between 80 and 60 degrees Fahrenheit (26.7-15 Celsius). If cold water is below 60 degrees Fahrenheit (15 Celsius), clothes are unlikely to be cleaned very well.

Jul 20, 2011 | Washing Machines

1 Answer

Air temp indicator only reads temps below 50 degrees


Ambient air temp sensor could be the cause. Normally located in front grille area.

Oct 06, 2017 | 2002 Chevrolet TrailBlazer

2 Answers

Will freezer work in low ambient temperature (i.e. 26'F)? I have a GE refrigerator/freezer (c. 1983) in a cabin which gets winter temps around 25 degrees. I found the freezer contents had melted and then...


The compressors are rated for ambient temp. and most refrigerator compressors are rated for abour 50 degrees F

to answere your question yes the ambient temp is a problem.

And as for the Thawing, the refrigerator will go into defrost every 8 to 10 hrs and turn on the heater inside the freezer for about 30 min.

You can also cause damage to the seal system and the compressor because the oil will become slugish inside the compressor.

In other resarch I found that because of the ambient temp the freon gas (mostly the newer freon's) won't work corectly because they stay in liqued form.

Jan 11, 2010 | Refrigerators

2 Answers

My frig. in the garage.. The freezer works great in summer months but in winter months it doesn't. Why is that?


Good day,
That is normal. The thermostat that runs the whole machine is located in the refrigerator compartment.
When it reaches normal temperature, it shuts off. In winter months that may mean as long as 12 hours or more. Thus not enough running time per day to keep the freezer near it's normal temperature.
Engineers design domestic refrigerators to be in an area comfortable to humans. Normally 70 degrees or higher. Thus your problem.
The only solution is to bring the machine inside.
Sorry.

Thank you for using FixYa

Dec 29, 2009 | Refrigerators

1 Answer

I keep my frigidare in garage even during winter time. When temperature drops to 3 degrees Celsius my frigidare stops working. Does anybody know what can I do to make frigidare to work and keep it in...


I know the minimum operating temp for many refrigerators is around 33 F (about a degree above freezing or so). This is due to the refrigerant gas within the compressor and the fact that it is not stable at low temps. Typically, a refrigerator's minimum ambient temp should be 50 degrees F (10 degrees C).

I don't know if there is a whole lot you can do. The refrigerator really wasn't built to work in such cold weather. You may either have to relocate it, put a heat source near it or look into a special freezer that is *supposedly* able to operate in much colder ambient temps.

Dec 07, 2009 | Kenmore Refrigerators

1 Answer

Whirlpool 6 sense model WSC5513- A+ X side by side, without ice or water dispenser. Refrigerator part not cooling properly. Temperature setting is -18 degrees Celsius for the freezer and 2 degrees...


The temp for the fridge is about right and -18 for the freezer is ok so check to see if the water filter is plugged, at 8 degrees Celsius is about 18 degrees fht. Which is freezing so the numbers don't add up. 26 degrees below zero on the freezer side is what you want if it that cold it could have frozen the water line.

Aug 20, 2009 | Refrigerators

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