Thermostat is OK. There are 24 volts to transformer. Pilot is lit. Furnace is ignition type. There are three wires to Honeywell gas valve. Measured voltages between all three wires. Could gas valve be bad. What else should I check .
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Thermostat is OK. There are 24 volts to transformer. Pilot is lit. Furnace is ignition type. There are three wires to Honeywell gas valve. Measured voltages between all three wires. Could gas valve be bad. What else should I check .
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