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Sr:01

Sr:01 - Pump Down Operation selected

Panasonic · Aquarea Heat Pumps

What does Sr:01 mean?

This mode is used to extract all refrigerant from the piping into the outdoor unit, typically for relocation or disposal. The 3-way valve will shift to the room side.

Common Causes

  • User has intentionally selected the pump down operation mode.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Press the SERVICE S/W for 5 seconds to enter Service mode.

  2. 2

    Select Sr:01 and press SET S/W to start the Pump Down operation.

  3. 3

    Allow the operation to complete as per the manual's timing instructions.

  4. 4

    Press the ON/OFF button to stop the unit after pump down.

  5. 5

    Note: Low Pressure error and Freeze prevention judgments are suspended during this operation.

Browse all codes in this manual (69)
Verified technical data. Last updated: April 2026

Related Faults

2 beeps then pause2 beeps then pause - Overfill warning3 red flashes3 red flashes - Communication errorError Code DisplayError Code Display - Abnormality detected
Source: Panasonic Aquarea Heat Pumps
Open Manual (Page 58)Search more codes in this manual