You mean it is frozen, the overflow discharge pipe(about 3/4" in diameter) frozen in basement?2 a% ^% g: J {* d$ `0 c/ @
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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)% O/ M) N& `# X1 \8 p
; z- n0 x0 y) g) B3 c MClose the main water inlet valve; $ w( W! u( U# L0 u3 j/ a( topen all faucets in the house including showers to drain all water out in the pipe line; f3 C) ]" |# ]4 aClose the cold water valve to the water tank if you have one;1 L5 z% [- W& {7 i) B# J" q# p
Shut down the hot water tank by closing the temperature switch to off;0 M% K- D, z1 Z9 f' ?
Open the drain valve at the bottom to drain all the water out; / e Q @9 l2 _( v5 q/ e( u r# ]) z! |Then remove the expansion valve, go to home or Canadian tire. they all have one.1 p# J8 k; T3 a4 G! Y4 O
$ y! _# }% r6 u$ e8 R/ `Any doubt text me at 780-880-2698 P+ Q" f/ ?. v( |* k6 Z3 C3 b
sorry I thought you were talking about a hot water tank.... 1 `' }4 T z$ L/ w( j! u0 @; n3 x0 K! E
The 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. ( Y# i; L" Y b/ i8 d7 x5 n: H# P& S2 b- _: k4 V( b
If there is no crack at the housing connector, just re-do the connection when the furnace is off. ! G2 C/ n/ S' }2 q+ }& }# a 2 j1 P7 F6 N! a6 O4 Z. u2 \' iNot a big issue..