With modern, solid-state starting components such as those pictured in figure 36, you may not hear clicking and buzzing as you do with older machines. If you have ADC, jumper the cold control terminals as descibed above, and wait for 30 minutes, then check for voltage at the compressor. The start relay usually looks like a small box plugged into the side of the compressor and its job is to turn the compressor on and begin the compression of the refrigerant gas that cools your refrigerator. Examine the circle closely. Replace it. Answer: If everything else on the fridge is working….. A small relay on the motherboard (main control board) may not be sending the compressor voltage. How to test your fridge’s cold control & temperature control with a multi-meter: After disconnecting your appliance from the power source, open your refrigerator door and locate the control. Look at the timing gear housing on the back of the icemaker head. Our team does their works insufficient times. The relay transmits current to the start windings which then turn on the compressor. If you have a mechanical timer, and you don't have voltage to the compressor, use your alligator jumpers to connect the two wires of the cold control. If it does, replace the defrost timer. A starting capacitor may also be part of the overload’s assembly and becomes crucial in providing an increased starting voltage to the fridge’s compressor windings. If the test in section 5-3(c) doesn't start the compressor, you're going to have to get a wiring diagram (there may be one pasted to the back of the refrigerator) and start tracing wires with your VOM to figure out where you're losing power. How you diagnose a non-starting compressor depends much upon whether you have a mechanical defrost timer or ADC (Adaptive Defrost Controls.) If you have a fridge with ADC and the lights are on, and the compressor will not start, you need to check if you're getting voltage to the compressor starting components as described in Section 5-3(b). If you have a fridge with ADC and the lights are on, and the compressor will not start, you need to check if you're getting voltage to the compressor starting components as described in Section 5-3(b). They aren't that expensive. The all common click humming and click again from my research. (See section 4-5(d) and Figure 24 for details on how to advance the timer). What's happening is that your compressor is trying to start, but it can't, and the electrical overload is cycling on and off. But the compressor doesn't run all the time, only during the cooling cycle. Listen carefully to the fridge for a two or three minutes. This is the square-ish plastic or bakelite box attached to the side of the compressor. If the condenser … When you have established that power is getting to the fridge, check your controls. (See section 4-9) If you now have power to the compressor, the cold control is bad. If you don't have interior lights, check your house breaker. July 20, 2015. You can use your alligator jumpers to wire it in temporarily. When the fridge thermostat requests more cold air, the compressor kicks on and the refrigerant becomes high-pressure, moving through the cooling coils while fans push the cool air into the fridge and freezer compartments. To find out if your appliance’s start relay is malfunctioning, you can test its continuity with a multimeter. If you hear a "CLICK-BUZZZZZZ-CLICK" (with a buzz of between about 5 and 30 seconds) then you are getting power to the compressor. If your refrigerator does start, unplug the refrigerator and wire your "3-in-1" in permanently. If your refrigerator has solid state starting components, the "3-in-1" may fit onto your fridge directly, or it may not fit at all. Copyright © 2005 - EB Publishing Inc. All Rights Reserved. Then next common problem of compressor not starting is that " your fridge supply wire will be cut internally", in this case your refrigerator all machinery will not work, the cooling fan, light etc. Pull out the frig. If not, the ADC board is bad. Refrigerator Compressor Not Running Problems and How to Fix it, 8 Reason of refrigerator / fridge not cooling, Sub-Zero, Viking refrigerator repair in LA JOLLA, Distribution Board Wiring Diagram For Single Phase Wiring, How to Control a Lamp / Light Bulb from Two places Using Two Way switches For Staircase Lighting Circuit, Contactor Wiring Diagram For 3 Phase Motor with Overload relay, Ceiling fan Capacitor Wiring Connection Diagram. The compressor of a fridge utilizes a gaseous refrigerant that is in a low-pressure state. If you see signs that this start relay is bad, such as your refrigerator not cooling, you'll need to replace it. Place a screwdriver in the advancement pinion and advance the timer manually (remember, clockwise only) about 1/4 to 3/8 of a turn. Use butt connectors, wire nuts and electrical tape. In the parts houses, "3-in-1" units are also known as "hard start" units. Since the compressor is a very important part in the refrigeration system, it needs to have a working refrigerator start relay in order to work. If you do hear a sound, it will be something like: "CLICK-BUZZZZZZZZZZ-CLICK." You should first verify that there is no power being supplied to the compressor, that you have incoming power to the control board and that the external controls are functioning properly before condemning the electronic control. It's as if it wasn't even plugged in, except that the interior lights will still be on. By Lyle Weischwill. If your case is the latter, you will need to get the original equipment replacement relay assembly for your fridge. To test for deadbreak, first unplug and remove the icemaker from the freezer compartment. If you're thoroughly intimidated by electricity, then call a technician. A starting capacitor may also be part of the overload’s assembly and becomes crucial in providing an increased starting voltage to the fridge’s compressor windings. If the cause of your compressor's not starting was bad starting components, it will continue to run indefinitely. Test for continuity between the BLACK and PINK terminals and the BLACK and ORANGE terminals of the plug (see Figure 34). Count your blessings and start saving up for a new fridge (or a major repair), just in case. Check the voltage that GOES TO the compressor. The condenser fan that is next to the compressor comes on at the same exact time as the compressor. If this arrow lines up with the arrow molded into the black timing gear housing, then you might have a deadbreak. Electronic controls are complex and expensive. If the cause of it not starting was that the compressor motor is getting worn out, the "3-in-1" will prolong the life of your compressor for somewhere between a few hours and a year or two. The defrost switch might fail into a "deadbreak" position in which nothing runs, similar to that described above. First, remove the old starting components. We provide the best quality of the Aircon servicing. If your refrigerator will not start, the control board could be at fault. I have replaced the relay with a new one and the problem does not go away. Sub-Zero, Viking refrigerator repair in LA JOLLA. Replace it. You will see an arrow molded into the circle. Fridge Compressor won't start. If not running then put your hand on top the compressor and see if it's hot, almost to hot to touch. Hello, I have an Amana Fridge #abb1927des and I'm having an issue with the compressor not starting and as a result it is not cooling. It might be that one of your compressor starting components is bad, or that your compressor motor is wearing or worn out. Replace it. A platform to learn electrical wiring, single phase, 3 phase wiring, controlling, HVAC, electrical installation, electrical diagrams, Thanks for taking the time to discuss this, I feel strongly about it and love learning more on this topic. It will be located behind the temperature adjustment knob and is usually found in the fresh food section control panel. Voltage is also one of reason of which make refrigerator compressor not running, so use a voltage regulator or voltage steplizer to provide the same ratio voltage which compressor need to start. Our company team is good experienced in Aircon servicing. Do not forget that modern overload relays are always a combined unit commonly plugged into the compressor’s side. How you diagnose a non-starting compressor depends much upon whether you have a mechanical defrost timer or ADC (Adaptive Defrost Controls.) The terminating thermostat will open and stop the heater at a certain temperature, so the fridge will not continue to heat up. They contain circuitry that provides a little extra power to start a hard-starting compressor. If you do not have voltage to the compressor, check the cold control as described in section 5-3(c).