You mean it is frozen, the overflow discharge pipe(about 3/4" in diameter) frozen in basement? * Y& K2 |9 V5 C0 V+ J9 r, c2 }5 A6 |" D% X0 E) l
Anything related to water frozen in basement is a serious issue, it has to have immediate attention.
Few minutes work if just the safety expansion valve leaks ( most probably only the valve)' y4 X) E; T) p f2 Z$ U0 N v3 H
3 Y9 _1 M% A. y& HClose the main water inlet valve;5 k& X. I1 g/ p) V0 x7 S; N
open all faucets in the house including showers to drain all water out in the pipe line;3 b+ }4 s& J3 q( [
Close the cold water valve to the water tank if you have one;, u2 m S+ {. s
Shut down the hot water tank by closing the temperature switch to off; I* \' c# f, o/ ^+ W9 m5 y
Open the drain valve at the bottom to drain all the water out;5 l. h6 x: A( h, C0 k9 Q. F7 i
Then remove the expansion valve, go to home or Canadian tire. they all have one. ; [1 Y* Z9 P8 F/ D+ N7 X # D/ ~. `& d' `- t) F4 c! {Any doubt text me at 780-880-2698 % @2 ]+ b$ L$ ^$ U
sorry I thought you were talking about a hot water tank....2 V, _2 r# f, z
. v! h5 U' V0 |2 V; e7 y& gThe humidifier is even simpler. The drain hose is supposed to have water go thorough the humidifier filter inside the housing and then goes to drain when furnace is on.$ ^# L# ^! B1 S
2 v9 h9 |! e/ `; Y% r1 J, y) H. s4 ^% fIf there is no crack at the housing connector, just re-do the connection when the furnace is off." r7 A' n" E1 Q$ J# i4 C m& x
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Not a big issue..