tennants boiler is not heating up. It looks like the pilot light is on and the thermostat is up but the heater is not turning on. Any ideas?
怎么也得告诉一下锅炉型号什么的吧？
Fan is broken?
When the power is turned on then there is a very quiet hum noise, but it is very quiet. No strong blowing out of outside vent pipe.
这是个 open vented system，锅炉不是很复杂，水包附近还有泵和控制阀门。任何部件都有可能坏，这种系统，不去现场很难支招。
找修理工吧。
也有可能是循环泵circulating pump趴了。关/开系统摸摸看泵是否运转。
如果是boiler的问题，这样的老家伙，出租房，与其花钱找人修（200-300）不如换新的，皮实的boiler。连powerflush，新锅炉，再加过滤器一共2000能拿下