EZ Link
NO
*Is a remote temperature controller
connected to one of the water heaters?
Does physical water temperature match
that shown on remote/s?
Is the complaint for low or
fluctuating water temperature?
Connect the EZ-Link wiring correctly.
Is the EZ-Link cable firmly plugged into
connector O on both water heaters?
NO
Is dip switch 4 (@DIP1) set to the ‘ON’
position on each heater?
YES
YES
Isolate power to both units, set dip
switch 4 to the ‘ON’ position and
restore power.
NO
A controller must be connected to one
of the water heaters for the EZ-Link
system to function.
NO
System functioning correctly.YES
Conduct fault finding on the water
heater indicated by the controller
display as having a fault (1 or 2) and
based on the error code displayed.
Is an error code:
1. Being displayed by the controller, or
2. Stored in the maintenance memory?
YES YES
Fluctuating water temperature may be
due to low water supply pressure;
small pipe sizing; incorrect
manifolding; massaging shower
heads; crossed connection; insufficient
gas pressure.
NO
Is the complaint for no hot water? YES
NO
Fault with controller or EZ-Link Cable.
Replace controller or EZ-Link cable &
reset dip switch 4 to the ‘ON’ position
on both water heaters.
Is the complaint for incorrect
water temperature?
YES
Disconnect the controller, EZ-Link cable
and set dip switch 4 on both heaters to
the ‘OFF’ position. Do the water heaters
operate individually?
YES
YES
Water inlet and outlet connections
connected back the front.
Flow rate less than 3 litres/minute/unit.
NO
Incorrect water temperature may be
due to low gas pressure; incorrect
burner pressure setting; faulty or
contaminated thermistor(s).
NO
The EZ-Link system is flow rate
dependant. It is normal for only one
heater to operate under low flow
conditions.
NO
* Not applicable
to 6 star models
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