ceiling mounted climatemaster geothermal heat pump, i need help

[flodog]

i got a government building that has just recently installed 47 ceiling mounted geothermal heat pumps. they are all climatemasters. i am having a problem with a handful of units that are going into a lockout alarm. pressures are good, they run for a period of time (some run a few hrs and some run for a couple days) and when they lockout the fan continues to run. condensate is clear, freeze protection checks out. i am about to change out the control board on 1 unit. anyone got any experience with these climatemasters, have you had this problem and what you did to fix it?

[wbrown]

Model numbers would be nice information to have. What code is it giving you?

[glennwith2ns]

Sounds like water flow problem. Have you checked screens on these units?

Always seems like there is dirt in lines no matter how much flushing is done.

[tech93]

Do they have flow restrictors?How high is your water level in the tower sump

[xpuser357]

I also would check your y strainers screens:.02:

[newinthefield]

Dirt,dirt,dirt......in other words water flow. Also water temperature. Check that beafore you start replacing control boards.

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