Important service bulletin:

The traditional method of wiring Goettl’s Astro Air and E-Series Heat Pumps use the system switch's (heat-off-cool) blue wire to energize the reversing valve in the heat mode.

A change in our defrost board circuitry may cause a voltage feedback from some thermostats to occur if the traditional wiring is used. This voltage feedback may cause the Heat Pump to operate in an erratic fashion.

Wire Goettl’s Astro Air and E-Series Heat Pumps as follows to prevent unnecessary problems and erratic behavior:

• R =     24 Volt Power [Normally the red wire]
• C =     Common [Normally the purple wire]
• W1 =  Heat [Normally the white wire]
• Y =      Cool [Normally the yellow wire]
• G =     Auto/On Fan Switch [Normally the green wire]
• W2 =  2nd Stage Heat [Normally the orange wire]

Do not use the "B" terminal [Normally the blue wire].

Equip. Manuals

J1/E5 Models - HTML

J1/E5 Models - PDF

SC Models

Evap. Coolers

Helpful Info

Evap. Coolers Tips

Supported Products

Bulletins

Thermostat Wiring

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