Heater
#1
Heater
I've got a century old house and at some point a floor heater was added. The heater is natural gas. It appears to have been retrofitted with a newer gas control valve that looks fairly new. It uses a pilot light and is controlled by a millivolt thermostat.
The problem is that the heater doesn't start up when the thermostat is triggered. I started by replacing the battery, and then the thermostat. I found that the heater will start if I short the wires together at the thermostat. So then I replaced the low voltage wire and cleaned the terminals on the control valve.
The heater started for about a week and then the old problem was back. I changed to a new thermostat again and still nothing.
I can't figure out why the heater will start if I short the wires together, but it won't when the thermostat is used. Any ideas?
The problem is that the heater doesn't start up when the thermostat is triggered. I started by replacing the battery, and then the thermostat. I found that the heater will start if I short the wires together at the thermostat. So then I replaced the low voltage wire and cleaned the terminals on the control valve.
The heater started for about a week and then the old problem was back. I changed to a new thermostat again and still nothing.
I can't figure out why the heater will start if I short the wires together, but it won't when the thermostat is used. Any ideas?
#2
basic electrical principals
say that if you jump out the tstat, and unit runs, tstat is bad. are you using a millivolt tstat, and what is the heat anticipator set on, and what is the amp draw of the gas valve?