You mean it is frozen, the overflow discharge pipe(about 3/4" in diameter) frozen in basement? 0 M @# g" |9 ^: X 7 G( o5 q9 U6 c1 v& b5 U0 [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) 9 a7 _( }$ G' ?- k' L! n - ?2 {7 A& F, Y7 ^3 HClose the main water inlet valve;: I1 h2 y: O/ k: c8 p V( @
open all faucets in the house including showers to drain all water out in the pipe line; V+ q" ^# Q! |* GClose the cold water valve to the water tank if you have one; " K! L4 e1 q% l' ^/ ]Shut down the hot water tank by closing the temperature switch to off; ) a: v) ]$ \ p3 C- J2 J0 G1 xOpen the drain valve at the bottom to drain all the water out; ) b1 w. q: Z2 K5 G; hThen remove the expansion valve, go to home or Canadian tire. they all have one. & M# k0 U% ^3 d0 A! h8 x 7 r1 b" j! I8 k; vAny doubt text me at 780-880-2698 K3 F# A3 x8 k' P) C" H
sorry I thought you were talking about a hot water tank....8 V# j2 N: S# t. `, p {: ?
/ ^% L/ }2 ?* k% }9 K( JThe 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. 4 `& t4 r! U* B" U* E1 @; M , a8 z. u* K; Q: t+ l3 X# hIf there is no crack at the housing connector, just re-do the connection when the furnace is off. " e9 Z" |) W* m5 u+ q8 d7 `% z# E3 c' x
Not a big issue..