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en:puus_setup

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puu's MitsuRunner setup

Notable changes to the original SW and HW:

  • Two additional Dallas sensors in heat exchanger pipes (used for research and as spare parts)
  • Current clamp sensor monitoring input power of the heat pump
  • Variable temperature delta threshold to start defrosting:
    • if (input) power < 900W, threshold = 4
    • if 900W ⇐ power < 1400W, threshold = 5
    • if power >= 1400W, threshold = 6

Mitsurunner wiring

Outdoor unit opened

Defrost thermistor's wires

Defrost hack wires installed

MitsuRunner's AC wires and current measurement clamp


Sensors

Outdoor heat exchanger sensor and spare sensor

Outdoor temperature sensor

Spare sensor on upper pipe


Enclosure


Other hacks

Defrost thermistor insulated

Holes drilled to avoid ice accumulating

en/puus_setup.1673596118.txt.gz · Last modified: 2023/01/29 21:54 (external edit)

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