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Troubleshooting
6. No Hot Water - “Er”, “FL”
TLW457S
There is no hot water.
Is the water
supply faucet
closed?
Open faucet.
Yes
Is the water
supply cold?
No
Check water heater.
Yes
Is the hot water
fill hose kinked?
Straighten or
replace hose.
No
Yes
Is the mixing valve
screen or screen in
outer end of fill hose
nearest water supply
faucet clogged?
No
Disconnect hot
fill hose and
clean or
replace screen.
Yes
No
Is
there voltage
output from output
board to the Hot Solenoid
at “H4-8” and
“H4-1”?
Is there
voltage at the
Hot Solenoid?
Replace
output
board.
Check wiring
from output board
to water valve.
Is
Hot Solenoid
inoperative?
Replace valve.
Yes
No
Remove and
clean or
replace hose.
Yes
Is
pressure hose
clogged or
damaged?
Yes
No
Yes
No
1
TLW457S