Unit will work for weeks and then lose power. To resolve this, you have to disconnect it from power supply for about 8 hours and then reconnect. Anything less is not long enough for it to discharge whatever build up is causing the failure.
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Power lost on two units in one car is a little unique. Does it lose power in the middle of a trip or when you first get into car? I would recommend bench testing to direct 12v unit to see if car is causing voltage loss.
After researching that model I can tell you that it has an intergrated internal power supply(transformer) which does contain a fuse. It is located where your power cord plugs into, inside the unit, start with that. Was it plugged into a surge protector? When you had the power failure the second time was there a fluctuation of power, ie your lights in your house flickering on or off or increasing, decreasing in brightness? This will help me determine if it's something else. Also be sure to check your power cord, look for any kinks, breaks, chips in insulation. Anyway Good Luck
Hi - I believe the problem is the power module located on the rear of the machine. I have not done work on F&Paykels for a long time.
Whats happenning is the controls is picking up an error with the input power supply, the modules perhaps got an intyermittent issue.
Try this turn your fridge off & back on again - the E522B will start to beep indicating the lose of power which is exactly whats happening to the unit at the moment, to eliminate the beeps you reset with the temp button on the inside.
Outdoor units require there own power supply, check the breaker panel and the fuses in the disconnect switch box next to the unit if there are fused, If the capacitor that was changed last year was not the right rating or configuration it may need to be corrected. One of the most common mistakes is to find a dual run capacitor with on side not functioning and jump in a capacitor for the non functioning side, if this was done it needs to be corrected with the proper capacitor or capacitors.
It could be a battery, a bit like the type you get in watches. But I reckon it's a memory retention capacitor that has failed. These are small looking things that look like electrolytic capacitors that have been squashed from above. They appear to have a working voltage of around 5.5 volts too. I am enclosing a picture of one, though it could vary in style. You might find it near the main display of the unit.
Exchange the power supply from one of the satellite handset recharge units. The power supplies are same model number. In my case the base unit would not show any power. When I exchanged it with the satellite power supply, the base worked properly and the old base power supply would actually work fine with the satellite charger. . . probably because the satellite charger has less power requirement. Also, my system had some noise in the line prior to the failure -- for about 2 weeks. This solved the noise problem as well.