How to replace 1E56W309 White Rodgers old thermostat with Honeywell RTH4300 [Archive]

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rldave

Sep 21, 2011, 07:04 AM

Hi
How can I replace old 1E56W309 White Rodgers with Honeywell RTH4300 thermostat in terms of wiring as there is Blue and White wire terminals on old thermostat whereas new one needs WH, YL, GRN,RED wires. Can some one guide me please...

rodri

Sep 21, 2011, 02:05 PM

How many wires does your old T. STAT has?

rodri

Sep 21, 2011, 02:07 PM

How many wires does your old T. STAT has?