Questions about maintaining your geothermal heat pump system? Do you think you have a problem with your system? Help is available here. Wed, 14 Oct 2026 10:00:53 +0000 Wed, 14 Oct 2026 10:00:53 +0000 GeoExchange® Forum https://www.geoexchange.org/forum/forums/maintenance-and-troubleshooting.279/ Tue, 07 Jul 2026 14:43:17 +0000 https://www.geoexchange.org/forum/threads/can-climatemaster-operate-in-cooloing-mode-while-hwg-is-disabled.8437/ https://www.geoexchange.org/forum/threads/can-climatemaster-operate-in-cooloing-mode-while-hwg-is-disabled.8437/ invalid@example.com (Pump>Dump) Pump>Dump Tue, 12 May 2026 14:58:12 +0000 https://www.geoexchange.org/forum/threads/running-in-stage-2.8435/ https://www.geoexchange.org/forum/threads/running-in-stage-2.8435/ invalid@example.com (nightowl) nightowl
Running in stage 2]]> Thu, 16 Apr 2026 23:14:16 +0000 https://www.geoexchange.org/forum/threads/rainbird-irrigation-valve.8412/ https://www.geoexchange.org/forum/threads/rainbird-irrigation-valve.8412/ invalid@example.com (Greenhorn) Greenhorn 5 Thu, 29 Jan 2026 16:23:09 +0000 https://www.geoexchange.org/forum/threads/envision-unit-running-stage-2-and-stage-3.8434/ https://www.geoexchange.org/forum/threads/envision-unit-running-stage-2-and-stage-3.8434/ invalid@example.com (JRBGEO) JRBGEO
I have a Water furnace unit that was installed back in 2008 in our Southington, CT home. My WEL page is shown below. The past few days we have noticed the vents in the first floor were unusually noisy

This morning I noticed the unit was running stage 2 and stage 3 with the second floor (zone 2) reaching 80 degrees even though the setpoint in the Water furnace thermostat is 65 degrees.

I turned off the thermostat off in the second floor. I also turned the switch for the electric...

Envision unit running stage 2 and stage 3]]> 1 Sun, 15 Jun 2025 22:20:32 +0000 https://www.geoexchange.org/forum/threads/possible-leak.8431/ https://www.geoexchange.org/forum/threads/possible-leak.8431/ invalid@example.com (limen) limen
Does this sound like the purge created a leak somewhere or is it possible there is air in the system? I can't...

Possible Leak?]]> Wed, 14 May 2025 19:35:46 +0000 https://www.geoexchange.org/forum/threads/waterfurnace-water-flow-led-blinking.8429/ https://www.geoexchange.org/forum/threads/waterfurnace-water-flow-led-blinking.8429/ invalid@example.com (dpwct) dpwct
The Water Flow LED is blinking. Appreciate any advice on how to diagnose and fix the problem

See Photo]]> Tue, 03 Dec 2024 15:46:18 +0000 https://www.geoexchange.org/forum/threads/air-filter-has-mold.8427/ https://www.geoexchange.org/forum/threads/air-filter-has-mold.8427/ invalid@example.com (JRBGEO) JRBGEO
I replaced the air filter in our geothermal unit this evening. We have a Waterfurnace Envision unit NDV049.

The filter was filthy and I noticed as well it had mold stains on it. This summer we aerosealed our ductwork to cut the air leakage. Our system is WEL0444. The coil in the unit was replaced a few years ago due to formicary coil corrosion. The coil was replaced with a new coil with the formishield protection in it.

Any ideas as to what could be causing the mold? We...

Air filter has mold]]> 2 Thu, 21 Nov 2024 16:36:36 +0000 https://www.geoexchange.org/forum/threads/wf-series-7-data-on-the-sd-card.8420/ https://www.geoexchange.org/forum/threads/wf-series-7-data-on-the-sd-card.8420/ invalid@example.com (Greg Brockway) Greg Brockway
I am using AWL File Viewer to get to it.]]> 2 Sun, 13 Oct 2024 17:32:00 +0000 https://www.geoexchange.org/forum/threads/black-sediment-in-geothermal-filter.8424/ https://www.geoexchange.org/forum/threads/black-sediment-in-geothermal-filter.8424/ invalid@example.com (CommanderDave) CommanderDave
Black Sediment in Geothermal Filter]]> Mon, 16 Sep 2024 19:56:16 +0000 https://www.geoexchange.org/forum/threads/climatemaster-desuperheater-temp-switches.8423/ https://www.geoexchange.org/forum/threads/climatemaster-desuperheater-temp-switches.8423/ invalid@example.com (kinglerch) kinglerch
I have a Climatemaster TT30 049 with a groundwater loop field, and 2 hot water tank setup (one of the tanks is off, and connected to the desuperheater/HWG). How Climatemaster has this set up is that power to the HWG pump is connected through 2 temperature switches - 1 at the HWG (normally closed) and 1 at the compressor...

Climatemaster desuperheater temp switches]]> 1 Sat, 27 Jul 2024 21:30:50 +0000 https://www.geoexchange.org/forum/threads/condenser-flow-direction.8421/ https://www.geoexchange.org/forum/threads/condenser-flow-direction.8421/ invalid@example.com (bjl) bjl
All in all...

Which direction should it go?]]> Wed, 10 Jul 2024 15:21:01 +0000 https://www.geoexchange.org/forum/threads/gradual-increase-in-electrical-consumption.8416/ https://www.geoexchange.org/forum/threads/gradual-increase-in-electrical-consumption.8416/ invalid@example.com (Mort) Mort
We've had a WaterFurnace Series 5 w/ Aurora monitoring since 2015. Ours is a 5-ton water to air system with a ground loop. Over the past two years, I've noticed a change in the unit's average power consumption.

During Stage 1 heating cycle with fan at 5 (which is what our system typically runs at), power consumption has historically been between 4000 t0 4200 watts for the whole system. Recently, however, power consumption has increased to the 4500-4700 watt range. It is the...

Gradual increase in electrical consumption]]> 2 Sat, 22 Jun 2024 02:30:13 +0000 https://www.geoexchange.org/forum/threads/power-outage-thermostat-tpcc32u02-blank-and-no-power-to-router.8418/ https://www.geoexchange.org/forum/threads/power-outage-thermostat-tpcc32u02-blank-and-no-power-to-router.8418/ invalid@example.com (tonyg) tonyg Reset every breaker i could find.
No power to the router, no lights
Blank thermostat
Starting to get a bit warm in here haha]]> 1 Fri, 01 Mar 2024 03:02:22 +0000 https://www.geoexchange.org/forum/threads/would-you-pay-this.8414/ https://www.geoexchange.org/forum/threads/would-you-pay-this.8414/ invalid@example.com (wigaloi) wigaloi
Within 2 hours the compressor stopped again so emergency heat again. Called him and he came back out. Spent a couple of hours and did whatever. Still doesn't work and he is aware.

Today I get an $800 bill. If I pay, I'll be $1,400 poorer and still using emergency heat. I want to be reasonable, but I have gotten no benefit for him spending his time....

Would you pay this??!!]]> 1 Sat, 20 Jan 2024 15:39:09 +0000 https://www.geoexchange.org/forum/threads/red-thermostat-t-stat-comm-err.8406/ https://www.geoexchange.org/forum/threads/red-thermostat-t-stat-comm-err.8406/ invalid@example.com (Colton Weber) Colton Weber
I saw the selection of "intermittent fan". I had never used it before so I selected it.

Now my thermostat lights up red. Says phone contractor.

T-stat com err reset trip

Ive turned power to the whole unit off. Disconnected the thermostat. Nothing works.

Its about 30deg outside right now. House dropped from 68 down to 64 degs overnight.]]> 4 Fri, 19 Jan 2024 02:41:45 +0000 https://www.geoexchange.org/forum/threads/electric-strip-heat-not-working.8410/ https://www.geoexchange.org/forum/threads/electric-strip-heat-not-working.8410/ invalid@example.com (StirlingSilver) StirlingSilver
I needed to have my air coil replaced in November due to a refrigerant leak. An aluminum coil was installed. Fast forward to last week, I started receiving FP2 freeze protect, E4 errors. I checked pressures in the loop lines which were normal. Incoming water temp was 44°, outgoing 41. Using my AID tool I cleared the error and restarted the furnace. It was fine for several days then the error came...

Electric strip heat not working]]> 4 Tue, 28 Nov 2023 00:08:37 +0000 https://www.geoexchange.org/forum/threads/waterfurnace-7-failure.8404/ https://www.geoexchange.org/forum/threads/waterfurnace-7-failure.8404/ invalid@example.com (TNsteve) TNsteve
Waterfurnace 7 Failure]]> 1 Tue, 21 Nov 2023 19:04:24 +0000 https://www.geoexchange.org/forum/threads/synergy-3d-blows-only-cold-air-in-heat-mode.8405/ https://www.geoexchange.org/forum/threads/synergy-3d-blows-only-cold-air-in-heat-mode.8405/ invalid@example.com (Curious) Curious
ANY IDEAS]]> Sun, 29 Oct 2023 03:14:01 +0000 https://www.geoexchange.org/forum/threads/noob-question-about-high-pressure-light.8354/ https://www.geoexchange.org/forum/threads/noob-question-about-high-pressure-light.8354/ invalid@example.com (charles bennett) charles bennett
Noob question about high pressure light]]> 1 Fri, 20 Oct 2023 23:20:20 +0000 https://www.geoexchange.org/forum/threads/20-year-old-waterfurnace.8399/ https://www.geoexchange.org/forum/threads/20-year-old-waterfurnace.8399/ invalid@example.com (Andrew Kulin) Andrew Kulin Background:

Been about 7 years since I have posted to this forum. We bought a cottage near Haliburton Ontario in late 2015 equipped with a Waterfurnace 2-Stage geothermal furnace (installed ~2004 when cottage was built) that was also connected to the hot water tank. But it just did not seem to be working properly (too expensive to run). So with help of the forum and likes of Doc Jenser I was able to tweak settings on the unit to at least a bearable cost to run and it has been...

20 Year Old Waterfurnace]]>