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gotoman for ac
gotoman for ac, HVAC Technician
Category: HVAC
Satisfied Customers: 5000
Experience:  51 years of experience install design and repair of all makes and models of AC
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I have installed a Harmony III zone system on an SLP98

Customer Question

I have installed a Harmony III zone system on an SLP98 series furnace. All is working as expected, except when any of the thermostats are set for fan on mode, the blower does not run except when heat is called for. What am I doing wrong?
Submitted: 1 year ago.
Category: HVAC
Expert:  gotoman for ac replied 1 year ago.

Do you have G on board connected to G on thermostat. G from equipment to G no furnace. Jumper between R and RC Russ

Customer: replied 1 year ago.
G yes for sure. I thought rh & rc were connected by default, but I will have to check.
Expert:  gotoman for ac replied 1 year ago.

Just jumper them and retry. Russ

Expert:  gotoman for ac replied 1 year ago.

How did that work. Russ

Customer: replied 1 year ago.
Worked great, thanks.It was a case of RC and RH not being connected.
Expert:  gotoman for ac replied 1 year ago.

Great job. Glad you are online. Russ