Yes, the water is getting too hot and is blowing out the pressure relief valve through the expansion tank. You should change this immediately.
I don't agree:
I am assuming that by expansion pipe, you are referring to the pipe connected to the pressure relief valve - A broken Thermostat won't cause the relief valve to activate. A broken thermostat will cause the boiler to either run or not run as desired. However, a broken (or incorrectly set) aquastat can cause the boiler to run too hot and cause the valve to activate, but if it is chronic, it could be a defective or dirty relief valve, defective expansion tank, a problem with the pressure reducing valve on the domestic feed or (as was my problem) an internal leak in my tankless coil.
What is your boiler's pressure gauge reading and what does the Temp Gauge read on a call for heat (High Limit on and off)? Also, put a bucket under the pipe and carefully burp the relief valve to clear out any debris that might be causing the leak.
the gas controller is bad -- if the spring in the thermostat is broken, it wont tell the gas valve to open
if its not working.
Broken Steel is a DLC expansion pack, yes. If you don't have the DLC, then you don't have any of the Broken Steel content.
Thermostat may not be opening to allow coolant to flow through heater box. Thermostat may be opening too soon allowing cold coolant to flow through heater box. Either way thermostat needs replacing
Steel ball is used in boiler gauge glass to prevent overflow of water when ever gauge glass is broken..
Broken thermostat. Common Chrysler problem. Replace the thermostat.
Remove the water supply hose from the top of your 2005 Chevy Cavalier thermostat housing. Remove the thermostat housing retaining bolts. Lift the old thermostat out and drop in the new thermostat.
If the thermostat is broken in the closed position the engine would overheat rapidly. If it was broken in the open position the engine cooling system would not reach normal operating temperature and the heater would produce only warm air. Take the thermostat out and put it in a pan of water on the stove. When the water gets to around 200 deg F, the thermostat should open. If it doesn't it needs replaced. Observe carefully that you have not installed the thermostat upsidedown.
Your thermostat is broken
When it's broken or the mercury stays the same.
It's complicated to answer that question.
Depends on what is wrong with it. Can be a bad thermostat, or a broken or loose wire. Can also be the element is broken.
sounds like yours is broken.1 thermostat and 1 o-ring or gasket
A stuck closed thermostat would make the coolant temperature symbol illuminate.
either your low on anti-freeze or the thermostat is broken. i just changed my thermostat today and i cost $11 so it won't hurt to get it replaced even if your not sure its broken.
The pump is probably off or the coupling that connects the pump to the motor is broken.
Your water pump might be broken or your thermostat might need to be replaced. You obviously don't have a leak so somehow the fluid isn't moving through the engine. If the thermostat is broken it will not let fluid into the engine and then the engine will overheat and the radiator will release smoke.
your cars thermostat could be broken, making the coolant+engine not heat up, sucking the coolant from the expansion tank because its cold and giving your car a rough idle cause it has a hard time warming up
At Play.com 14.99 For A Double Expansion Pack (EXAMPLE: Fallout 3 Broken Steel And Point Lookout)
The thermostat is broken. If it's not heating at all the heater element and/or it's fuse is broken.
YES, DO NOT REMOVE IT (Unless it is to replace a broken one)
yes if it stuck open.
In very short: If the thermostat stays open, the warm-up time for the engine will be significantly longer, resulting in unwanted start-up wear. If the thermostat stays closed, the engine coolant can not circulate through the engine and cooling system, resulting in the engine overheating, as the coolant is used to keep the engine in a specific operating temperature.