Fisher & Paykel Freezer 4 Error Code: All Sensors Low

The reading behind code 4

Code 4 mirrors code 3. The control has measured every temperature sensor at once and found each resistance outside the normal range, here on the low side, under 660 ohms. The service manual’s resistance table helps put that in perspective: its warmest entry is 50 degrees C at 0.9106K ohms (roughly 910 ohms), and the table gives 2.186K ohms at 25 degrees C. Anything below 660 ohms falls beyond the end of the table.

Manual order of actions

1. Primary: inspect the 6 way RAST connector where it meets the power module.
2. Secondary: reterminate that same 6 way RAST connector.
3. Tertiary: swap in a new power module.

With every sensor affected, the manual does not point at any single sensor.

What you can do yourself

• Stop the alarm with a button press, or unplug the appliance from its supply for a few seconds.
• Write down the LED pattern that is flashing.
• Book a service visit. The parts concerned are a wiring connector and the power module, so there is little else for an owner to do.

One caution about timing: after the unit is switched on or a door has just been closed, keep the doors shut for 20 seconds so the self-test can run to the end before you rely on any code.

Related codes

• Code 3: the same all-sensor fault with resistance too high
• Code 6: only the freezer (FC) sensor, also too low

Freezer service across Los Angeles

For a Fisher & Paykel freezer showing code 4, call (310) 872-1939 and have the model number plus a note of any other part that has stopped working. More about refrigerator and freezer repair is on our service page.

Source: Fisher & Paykel Active Smart Refrigerators USA service manual 517775, sections 1.0 and 2.0