P1 code; unit may not start or may stop unexpectedly

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Undersized wiring to outdoor unit, Voltage drop due to long cable run, Utility supply issues, Loose neutral connection

Safety first: Isolate power before inspecting wiring.

Measure voltage under load: Have an electrician check voltage at the unit while it is trying to start.
Inspect cable size: Ensure the supply cable meets SMEG installation specifications.
Tighten connections: Check and tighten all terminal screws, especially neutral.
Contact utility if needed: If building voltage is consistently low, the power provider must correct it.

Do not bypass low-voltage protection; it prevents damage to the compressor and electronics.

Medium 3/5

Supply Wiring / Terminal Block

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