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Error code reference

Fisher & Paykel Refrigerator Error Code 42

The icemaker fill tube nozzle heater current is high (only seen with data download using Smart tool).

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What the 42 error code actually means

Your refrigerator's icemaker has a small heater that keeps the water fill tube from freezing over, and this error means that heater is pulling more electricity than it should. This issue is only detected when a technician connects a special diagnostic tool to read stored fault codes from the refrigerator. It does not typically cause an immediate breakdown, but it should be diagnosed to prevent potential damage to the control board.

Diagnostic procedure

The full 42 procedure

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1
First diagnostic step
Check the connections to the controller. Check the resistance of the heater.
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Most common causes of 42

Ranked by how often they cause this code
  1. 1Shorted nozzle heater element
  2. 2Damaged or pinched wiring harness
  3. 3Loose or corroded connector at the controller
  4. 4Moisture contamination in the circuit

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Questions people ask about 42

What does 42 mean on a Fisher & Paykel refrigerator?
Error code 42 means the icemaker fill tube nozzle heater is drawing a higher current than expected. This heater prevents the water fill tube from freezing, and a high current reading usually points to a shorted heater element, wiring fault, or bad connection at the control board. This code is only accessible via the Fisher & Paykel Smart diagnostic tool and will not appear on the standard display.
Is error code 42 on a Fisher & Paykel refrigerator dangerous?
A high-current heater circuit is not an immediate safety emergency, but it should not be left unresolved. Over time, a shorted heater can place excessive load on the control board, potentially causing further and more costly damage. Diagnosing and correcting the fault promptly is advisable.
Will resetting my Fisher & Paykel refrigerator clear error code 42?
A simple reset or power cycle may clear the stored fault code temporarily, but it will not fix the underlying electrical issue. Because this code is only retrieved through a diagnostic tool rather than displayed directly, it will likely be logged again if the heater or wiring fault persists. The root cause must be identified and corrected to resolve the fault permanently.
How do I fix error code 42 on a Fisher & Paykel refrigerator?
Start by inspecting and reseating the wiring connectors between the nozzle heater and the controller. Then measure the resistance of the fill tube nozzle heater with a multimeter. If the resistance is lower than the normal operating specification, the heater element is likely shorted and needs to be replaced. If resistance is within range, focus on the wiring harness and control board connections.
How much does it cost to repair error code 42 on a Fisher & Paykel refrigerator?
Repair costs depend on the root cause. If only the nozzle heater needs replacement, parts and labor typically range from around $100 to $250. If the control board has been damaged by the high-current condition, costs can be higher, generally in the range of $200 to $500 or more depending on parts availability and labor rates in your area.

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