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157

Low lp cool 157 — Compressor is blocked: Low pressure

Nibe · Air Conditioning

What does 157 mean?

The low-pressure transmitter in the outdoor unit is showing too low a value. This can be due to poor flow or significant wind effect.

Common Causes

  • Poor flow
  • Significant wind effect

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check for adequate system flow.

  2. 2

    Minimize or shield from significant wind effects.

  3. 3

    Inspect the low-pressure transmitter for faults.

  4. 4

    Consult a service technician.

Browse all codes in this manual (95)
Verified technical data. Last updated: April 2026

Related Faults

107Sensor flt: BT7 HW sens top 107 — Sensor fault: Hot water sensor151Sen flt: CL11- BT51 pool temp sensor 151 — Sensor fault: Pool temperature sensor152Sen flt: CL12- BT51 pool temper- ature sensor 152 — Sensor fault: Pool temperature sensor
Source: Nibe Air Conditioning
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