Need technical help with troubleshooting tips for water pump and controls for solar water heating system.?

Need technical help with troubleshooting tips for water pump and controls for solar water heating system.?

Need technical help with troubleshooting tips for water pump and controls for solar water heating system.?

This is a 20 year old solar water heating system that has been woking fine up until just recently. It has a Grundfos A8207 pump, and Heliotrope General Delta-t+ DTT-74 control box. The lights at the control box indicate power there, but the pump does not appear to come on (even when switched to “manual mode”). How do I determine if the problem is in the pump, or in the control box? There are no obvious frayed wires etc, and no other apparent damage. Any helpful suggestions will be very much appreciated. Thank you.

If you have the correct voltage where it is wired to the pump then your problem is the pump

Heating For Home

[SMP_MESSAGE]

Related posts:

1. My Whirlpool Water Heater stopped working, any troubleshooting I can do? It is probably two years old. It is a 56 gallon water heater and it has an Energy Saving device attached to it. In the past, I had to reset the Energy Saving device several times because the water heater will stop working. Yesterday there was no hot water so I reseted the energy saving [...]...
2. Where can I get a 12v waterpump to use in a solar water heating system. (It must pump less than 1 litre/min? Where can I get a 12v waterpump to use in a solar water heating system. (It must pump less than 1 litre/min? Heating For Home [SMP_MESSAGE]...
3. Is solar water heating system worth installing? Is solar water heating system worth installing? Chronology 2010: Bridges, schools and the economy Editor’s note: The change of the year is a good time to look back over the last 12 months and recall where we’ve been before diving into the 12 months ahead of us. Is solar water heating system worth installing? I [...]...

This entry was posted on at and is filed under Solar Heating. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.