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- Tue Dec 31, 2013 6:06 pm
- Forum: Help and Advice
- Topic: geothermal pumps arent running
- Replies: 1
- Views: 8767
geothermal pumps arent running
hi i have an ultrazone Gmp3000 control on a Trane ground source heat pump (geothermal) system. the two pumps arent running, and the fan just blows air. is there anything i should try before dragging the service guys out?