A.O. Smith HYB-90N Problem, Possible Causes, What to do, When The Tap Is Opened, the display

Models: HYB-90N

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WHEN THE TAP IS OPENED,

Problem

Possible Cause(s)

What to do

WHEN THE TAP IS OPENED,

a.The hot water fixture is not

Check if there is any error code on

THERE IS NO HOT WATER OR THE

sufficiently open to draw the water

the display.

HOT WATER TURNS COLD AND

through the heater.

 

STAYS COLD.

b.The unit display is an error code.

 

 

c. There is an external recirculation

 

 

system installed, or there is a

 

 

check valve on the recirculation

 

 

return line.

 

 

d.Improper sized dip tube.

 

 

e.Water heater disconnected from

 

 

electrical power.

 

THE WATER IS NOT HOT

The temperature is set too low.

a.Check unit’s temperature setting.

ENOUGH.

 

b.Check for cross plumbing between

 

 

cold and hot water lines.

THE WATER IS TOO HOT.

The temperature set too high.

Check unit’s temperature setting.

CANNOT OPEN DOOR.

Door pins locked in place.

a.Ensure the door lock is unlocked

 

 

b.Ensure the top and bottom door

 

 

pins are released by using a small

 

 

screwdriver to pry the pins in the

 

 

direction of the door opening.

 

TABLE 6

 

52

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Page 52
Image 52
A.O. Smith HYB-90N Problem, Possible Causes, What to do, When The Tap Is Opened, a.The hot water fixture is not, Stays Cold