Fisher & Paykel Refrigerator Code 7: Evaporator Sensor Over 45K Ohms

Three temperature sensors feed an Active Smart refrigerator, the evaporator sensor being the third. Code 7 is raised when that sensor measures above 45K ohms, which the control will not accept. The manual’s other name for its reading is defrost sensor temperature.

Repair steps in the manual

1. Examine the connection between sensor and power module.
2. Fit a new sensor.

Where the defrost sensor fits

According to the manual, no defrost takes place while the defrost sensor reads above +8 degrees C. The sensor therefore has a say in when the defrost heater may run. A poor reading can disturb that logic, and the fault sits near code 2, aborted defrosts. The manual does not connect the two codes, so treat that only as background.

Technician’s reading method

• Hold MODE and UP together to open diagnostic mode.
• Press UP two times to show the defrost sensor temperature on the LEDs.
• Total the lit values, then deduct 40 to get degrees C.
• Worked case: 32, 8, 4 and 0.5 lit gives 44.5, so 4.5 degrees C.

For the owner

This sensor sits in the cold part of the cabinet, so there is no safe owner repair. Look for frost forming in the freezer and check how cold the food is. Pressing any button quiets the alarm for now.

Related codes

• Code 8: the evaporator sensor reading under 660 ohms.
• Code 3: all sensors over 45K ohms together.

Refrigerator repair for Fisher & Paykel in Los Angeles

Telephone (310) 872-1939 about code 7. Say what the model number is and whether ice has built up in the freezer. The service page gives more detail.

Source: Fisher & Paykel Active Smart Refrigerators USA service manual 517775