Troubleshooting - A.O. Smith ZIP User Manual

Troubleshooting

The information in the following troubleshooting chart may help you diagnose and/or fix a
problem you may be experiencing. Please review this chart before calling for Customer Care
Centre.
Problems Possible Cause(s)
Inlet and outlet Fittings not tight.
fittings leaking.
Rubber washer worn-out at the
inlet/outlet.
LED display does No power supply to the heater.
not glow and no hot
water.
PCB problem.
Thermal cut-out tripped.
Step down transformer problem.
LED display glows Check water supply.
and no hot water.
Check for blockage at the inlet.
Heating element problem.
Touch buttons not Water droplets on Touch panel.
working.
Water pressure too low.
Touch buttons or PCB damage.
Water too hot. Set temperature is high.
Inlet water flow is low.
Water too cold. Set temperature is low.
Inlet water flow is high.
Outlet water flow Inlet strainer or shower clogged.
gets reduced over
time.
Heating chamber clogged.
In order to avoid a hazard due to inadvertent re-setting of the Thermal cut-out, this Water
Heater must not be supplied through an external switching device, such as a timer, or
connected to a circuit that is regularly switched ON and OFF by the utility.
Solution
Tighten fittings.
Replace Rubber washer at the
inlet/outlet.
Check and connect power supply
to the heater.
Call Customer Care Centre.
Call Customer Care Centre.
Call Customer Care Centre.
Turn ON water supply.
Remove blockage at the inlet.
Call Customer Care Centre.
Wipe water droplets on Touch
panel.
Open inlet valve completely to get
water.
Call Customer Care Centre.
Set to lower temperature.
Increase inlet water flow.
Set to higher temperature.
Reduce water flow.
Remove blockage at the inlet or
clean the shower.
Call Customer Care Centre.
CAUTION
10