8. TROUBLE SHOOTING
Cold water inlet pipe or hot water
outlet pipe from the solar water
heater is choked by sediment or
scales
Clean the pipes and descale as
necessary
PROBLEM
POSSIBLE CAUSE
SOLUTION
W a t e r i s n o t
flowing from the
tap
Cold water inlet valve is shut
Open the valve
Float valve in the feeder tank has
jammed or choked
Clean the float valve or replace it
Non return valve stuck
Clean the NRV or replace it
Air is trapped in the cold or hot water
pipe line
Open the hot water outlet pipe near
the valve and bleed the air or drain
the water out of the tank and fill the
solar water heater again
The solar water heater is not
receiving enough sun light
Expose heater to sunlight
Excessive water consumption
(undersized)
Plan water usage as per installed
c a p a c i t y. I n c a s e o f h i g h
consumption use the electric back-
up
Not getting hot
water
Incorrect connection of cold water
and hot water pipes to solar water
heater storage tank
Shorten the hot water plumbing line
or increase the capacity of the
system.
Cloudy day, not enough sun light
Use the electrical back-up
Cold water pressure due to mixing
valve preventing the hot water
coming through
Run hot water slowly at first and then
gradually open up the cold water tap
for optimal mixing of hot and cold
water at the point of use
System not in use for a long time
If the system is not being used, cover
the glass tubes with a shade or install
a steam trap on the air vent.
Water is boiling
and steam is
being released
from vent
Failure of controller
Repair/ replace the controller
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