Unit is not coming on when come back from defrost. timer paragon 8141-00 on a freezer Norlake Model ZF122SMS-0-2

how old is your model you have. a weak pump will make the system slower to get to temp even a broken seal can do this. even just a few mil gap can make it do this. if you close the door then re-open it it should be harder to open the door. this is the seal being nice and tight to its fittings.

You have done good work here young man. There is a relay or switch that is keeping the signal for being processed. I had the same similar problem with mine. At least your compressor is ok. Are you sure timer is wired back right.

in most cases its the defrost element as the other units last much longer unless the fan has become jammed this happens when people toss meat hard against the back wall if you know how to do polaity test using a multimeter do test on defrost element its not a thermistate as new age frezzers dont use them they use timers and plastic channels to curculate cool air

good luck need more addvice email me

Hi, sounds like your defrost clock is stuck in the defrost mode. On most true boxes they have a paragon defrost clock with adjustable pins you can set the amount of cycles and duration of the defrost cycle. Find the clock and give it a turn in the direction of the arrow or cw. It will come out of defrost and start to freeze again. If it continues, you may need a new clock. Let me know what you find. Keep me posted. True boxes are top of the line
Sincerely,
Shastalaker7

If the defrost timer sticks in the defrost mode,yes. Normal defrost time is 30 minutes or less depending upon which timer is installed.
If it happens again,locate the defrost timer and turn the dial manually to see if the compressor comes back on. If so,replace the timer.
It is probably on the rear near the compressor. Some are under the front behind the dust guard.

Normally, freezers have electric heaters that are energized during the defrost cycle. Once out of the defrost cycle, the refrigeration system comes on but the fans do not. This allows the evap to cool off and to prevent circulating warm air from the heaters. This is controlled by a fan delay switch. It is a small, round device that can have 2, 3, or 4 wires going to it, depending on the manufacturer. It is usually clipped on to the end of the evap coil on one of the "U" bends, near the top, inside one of the ends of the evap. Usually where all the electrial components are located. It come in several variations, but it's main function is to prevent the fans from energizing too early. Usually does not bring fans on till evap hits 20 or so degrees. Check this out and get back to me.

check out the defrost timer it sound like its in defrost. if that is not whats wrong then you can checkout the refrigerant by looking at the sight glass on the liquid line. It dhould not have any boubbles in it and if there is then your low on charge, n if threr isn't then you whille probebly be better off calling a service company out to repair the unit.

Having to manually defrost an automatic defrost system tells me there is a problem with your defrost timer. Most Beverage-air freezers have a Paragon timer. There are two dials on these timers. An inner and outer dial. On the inner dial is an arrow to indicate the direction of rotation as counter clock wise. On the inner dial is a copper pointer indicating duration of the defrost cycle.

Observe the copper pointer, no movement indicates that the timer is bad.

Check the evaporator coil for frost buildup on the back. Check for frost on the suction line, the biggest line returning to the compressor. If frost is evident at these places you have a defrost system problem. These systems have a defrost timer that defrosts the coil at preset times. Check the timer for proper operation by marking the position of the dial and check back to see if it changes. If it does not change position the timer motor is most likely bad. If the dial is not rotating automatically you can manually turn the dial in the direction of the arrow and put it through a defrost cycle.

The defrost timer is normally located in the area of the temperature controls. There is a clutch head knob on the timer which can be rotated clockwise very slowly until a click is heard. Wait 30 minutes and defrost should take place in that time period. If defrost does occur and the system does not restart cooling, rotate the knob more and you will hear a second click and the compressor should start .
If the system restarts in the cooling mode in 18-22 minutes the defrost timer is good and the problem is more than likely in the defrost heater circuit.