ᐅ Compressor failed after 6 years (Ecoforest ground-source heat pump / well construction by Heth)
Created on: 24 Mar 2023 09:38
J
jx7After 6.5 years, the compressor of our ground source heat pump has failed.
The expected lifespan of such compressors is stated to be 25-30 years.
Has anyone else experienced something like this?
Could the heat pump have been improperly installed, or what might have caused the damage?
Additionally:
The installing company Brunnebau & Erdwärme Heth from Lorsch is refusing to carry out the repair, citing a shortage of skilled technicians.
Overall, no official Ecoforest partner could be found to do the repair; a local heating and cooling company will now handle the repair.
It is an Ecoforest geothermal heat pump (model C3 3-12KW HTR EH) with a Copeland Scroll compressor ZPV36K1E-1E9-130.
Could it be that the 12kW heat pump was oversized for our house? (There are 190 sqm (2045 sq ft) of underfloor heating and domestic hot water for 5 people supplied by the heat pump. The house is built to nearly KfW-55 standard: final energy demand: 21.4 kWh/(m²·a) / primary energy demand: 51.4 kWh/(m²·a) / building envelope thermal quality: 0.25 W/(m²·K)).
The expected lifespan of such compressors is stated to be 25-30 years.
Has anyone else experienced something like this?
Could the heat pump have been improperly installed, or what might have caused the damage?
Additionally:
The installing company Brunnebau & Erdwärme Heth from Lorsch is refusing to carry out the repair, citing a shortage of skilled technicians.
Overall, no official Ecoforest partner could be found to do the repair; a local heating and cooling company will now handle the repair.
It is an Ecoforest geothermal heat pump (model C3 3-12KW HTR EH) with a Copeland Scroll compressor ZPV36K1E-1E9-130.
Could it be that the 12kW heat pump was oversized for our house? (There are 190 sqm (2045 sq ft) of underfloor heating and domestic hot water for 5 people supplied by the heat pump. The house is built to nearly KfW-55 standard: final energy demand: 21.4 kWh/(m²·a) / primary energy demand: 51.4 kWh/(m²·a) / building envelope thermal quality: 0.25 W/(m²·K)).
K
KarstenausNRW24 Mar 2023 11:08jx7 schrieb:
what caused the damage?Sometimes things just break. It’s bad luck – nothing more, nothing less. After all, it’s a technical device. The service life is not defined by years, but rather the years are calculated based on average usage. If you have a heat pump that cycles on 56 times a day (this is called short cycling), the average usage might already be reached after 6.5 years.
Only the specialist company carrying out the repair can tell you exactly what is broken and why.
Yes, bad luck is an option.
I understand that a device with a service life of 25-30 years can sometimes last only 15-20 years or even 35-40 years.
But only 6.5 years is really very short and quite frustrating.
The ground source heat pump’s display shows:
Hours: 19672
Starts: 57579
Starts per hour: 35.596
The suspicion of oversizing comes from the specialist company. Let’s see how it develops.
I understand that a device with a service life of 25-30 years can sometimes last only 15-20 years or even 35-40 years.
But only 6.5 years is really very short and quite frustrating.
The ground source heat pump’s display shows:
Hours: 19672
Starts: 57579
Starts per hour: 35.596
The suspicion of oversizing comes from the specialist company. Let’s see how it develops.
W
WilderSueden24 Mar 2023 11:23With a runtime of 2 minutes per start, there is likely more wrong than just the sizing.
R
RotorMotor24 Mar 2023 11:30Yes, that is really bad.
Maybe it was due to incorrect settings or issues with the hydraulics, such as ERR occurring too often, etc.
And definitely oversized as well.
Maybe it was due to incorrect settings or issues with the hydraulics, such as ERR occurring too often, etc.
And definitely oversized as well.
Hello,
Something doesn’t seem right with your values. Could there be a misplaced decimal point somewhere?
6.5 years amount to about 57,000 hours. That would mean you have a start per hour rate (which I think is way too high). And a runtime per start of 1/3 hour = 20 minutes per start.
What does the "Starts/Hour 35.596" mean then?
Best regards,
Andreas
Something doesn’t seem right with your values. Could there be a misplaced decimal point somewhere?
jx7 schrieb:
The geothermal pump display shows:
Hours: 19672
Starts: 57579
Starts/Hour: 35.596
6.5 years amount to about 57,000 hours. That would mean you have a start per hour rate (which I think is way too high). And a runtime per start of 1/3 hour = 20 minutes per start.
What does the "Starts/Hour 35.596" mean then?
Best regards,
Andreas
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