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Vaillant Arotherm: excessive noise from compressor
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181
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6430
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3 June 2026
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Why doesn't a low flow temp translate into a decent COP
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65
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1425
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3 May 2026
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R290 tweaker-friendly heat pumps in the middle price category. What to choose for 7kW load UFH house? Why are certain nations users choose differently? Vaillant, Samsung, LG, Panasonic
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8
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249
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28 April 2026
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Installers and Open Energy Monitoring
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10
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290
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25 April 2026
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Vaillant AroTherm Plus 12kw - high-pitched whirring noise at lowest modulation (25%)
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3
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95
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4 April 2026
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Vaillant eBUS hardware adapter (ebusd software) Thread
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521
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31058
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27 February 2026
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COP expectations for 7kW vaillant
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7
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216
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20 February 2026
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Performance figures after removing buffer tank?
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23
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540
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13 February 2026
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Noisy central heating since Vaillant aroTHERM plus 7 installation
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6
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357
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8 February 2026
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Legionella flow temp at 78C heating water to 72C
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8
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196
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30 January 2026
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The Valliant 3.5kW DHW heating cycle seems better than the 5kW Eco Cycle
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1
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133
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28 January 2026
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Vaillant Arotherm hmu_setmode_flowtemp_desired keeps increasing, ignoring HC1_actual_flowtemp_desired_value
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10
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226
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14 January 2026
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Short cycling, third party thermostat help
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4
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145
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10 January 2026
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Defrost hell
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46
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2014
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23 December 2025
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Integrating MyVaillant app with EmonCMS
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7
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742
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19 December 2025
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Vaillant maximum output capacity testing
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171
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6307
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1 December 2025
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Vaillant Arotherm Interface wiring help required
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5
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421
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1 November 2025
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Trying to understand Start/Stop conditions of my (vallaint) heat pump
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0
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84
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29 October 2025
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Help! No heat from Vaillant Arotherm+
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18
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1288
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11 October 2025
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Advice on OEM Level 3 Heat Pump Monitoring for Vaillant aroTHERM Split Plus
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2
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147
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12 September 2025
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Short Cycling every 10 mins @ 11C, Arotherm x 2 12Kw Cascading
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1
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104
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10 April 2025
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Vaillant AroThem Plus DHW overshoot
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0
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83
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25 February 2025
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Diagnosing Arotherm+ 5 & Radiators in Scotland
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52
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462
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12 February 2025
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Valliant Arotherm Plus ~ Saunier Duval Genia Air Max
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0
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67
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11 February 2025
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Vaillant Arotherm Plus 7kW never low and slow
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38
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1910
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23 January 2025
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My Vaillant app - reported outside temp
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24
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1788
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1 December 2024
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Vaillant AroTherm Control Not respecting temperature?
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3
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173
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20 November 2024
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Why is my heat pump heating the central heating when there is no demand?
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2
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145
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24 July 2024
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New Vaillant AroTherm Plus 7kW Install
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17
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1210
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23 July 2024
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Vaillant heating and cooling zone
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60
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3233
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20 July 2024
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