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Heat pumps
Heat pumps · Error codes · Haier
87Haier · Super Aqua Split (R32, AW..SSCHA/SNCHA + HU..WAMNA)

87 on a Haier Super Aqua Split: Defrosting with too low water temperature

Short answer

On a Haier heat pump, 87 means: Defrosting with too low water temperature. The manual does not say whether the heat pump stops. An engineer is needed to fix the cause.

Reviewed 23 September 2026 · 1 source

What it means

The manual says: Defrosting with too low water temperature.

Part involved: water flow switch/pump, water temperature.

Is it safe?

Does the heat pump stop?Not stated
Engineer needed?Yes

The manual does not say whether the heat pump stops.

Resetting itself: unknown.

What you can check

  • Note the code shown on the controller and the unit model numbers (on the rating plate label) before contacting your installer.
  • Check the heat pump's breaker/isolator at the consumer unit is on; do not open any casing.
  • Check the heating system pressure gauge shows the pressure your installer set (typically about 1-2 bar); if it is low, report it rather than refilling unless you have been shown how. Check any filling loop is closed.
  • Check radiator valves / underfloor zones are open and thermostats are calling for heat.
  • In freezing weather keep the heat pump powered on (its frost protection relies on power) and check the outdoor unit is clear of snow/ice.

What the engineer will check

  • Follow the manufacturer's troubleshooting flowchart for this code.
  • Check water pressure, strainer/filter and air in the system.
  • Check circulation pump operation and flow sensor/switch.
  • Check heater safety thermostats and wiring.

Who to ask for: Heat pump engineer.

Certification: Heat pump installer competence; F-gas / flammable-refrigerant (R290/R32) handling competence for any refrigerant-circuit work.

What you might notice

Sources

A code explains what the controller detected, not a confirmed root cause.

Reviewed: 23 September 2026