Why would a steam trap be cold?
The trap is not discharging any water or condensate. There are a couple of reasons why this
1. The pressure may be too high.
2. There maybe no water or steam coming to the trap
3. There maybe a defective or worn piece inside the trap not allowing the trap to work properly.
4. The trap body could be filled with scale or dirt
5. The bucket vent, in an inverted bucket trap, may be filled with dirt
6. If it’s a disc trap, the trap may have been installed backwards.