Specifications

TM040 16, 18 & 20L Continuous Flow Gas Water Heater Service Instructions
D.O.I: 2/06/2009
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19
EZ-Link Error Code Display
If a fault is present with one of the water heaters connected via the EZ-Link system, in
addition to displaying the normal error codes, the controller will also display a 1 or a 2 to
indicate which unit is at fault.
1 indicates the unit to which the controller is connected has the fault, 2 indicates the unit
which does not have the controller connected has the fault.
EZ-Link Fault Finding
EZ Link
NO
Is a controller connected to one of the
water heaters?
Is more than one controller fitted?
Is the complaint for low or
fluctuating water temperature?
Connect the EZ-Link wiring correctly
Is the EZ-Link cable firmly plugged into
connector E on both water heaters?
NO
Is dip switch 4 on both heaters set to the
„on‟ position?
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
Remove the additional controllers.
ONE controller ONLY may be used
with the EZ-Link System
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 in
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