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COMMISSIONING AND CONTROL SETTINGS
12.3 FINAL CHECKS ( SP4UN AND BX5 HEATERS )
a. Check the temperature rise at the outlets. The temperature of the warm air at any outlet should not be more than
45ºC above the return air temperature. If it is, the heater will be approaching an overheat condition.
b. Check that the fan continues to run while the gas burner is operating.
c. Check that the fan operates in fan-only mode by operating the networker in fan-only mode (refer to the Owner's
Manual).
d. Ensure that the required gas inlet pressure is supplied at all times during heater operation (including when all
other gas appliances are operating at full capacity).
e. Ensure that the heater is switched off.
f. If the manometer still connected, turn off the gas supply at the supply tap, remove the manometer and tighten
the captive screw at the inlet gas pressure test point.
g. Turn on the gas supply at the supply tap and test for leaks using a soapy water solution or leak detector spray.
h. Install the heater top panel.
i. Instruct the customer on the correct operation of the system.
j. Issue any required documentation to the relevant people/authorities in regard to the installation of the heater,
the gas connection and the power supply. (For example, a Certificate of Compliance and Certificate of Electrical
Safety.)
12.4 FAULT CODE IDENTIFICATION ON HEATER PCB
If the heater fails to start the fault may display on the heater control board with a dual L.E.D flash sequence. The
two L.E.D's that display the fault code are 'PRIMARY STATUS L.E.D 1' and 'PRIMARY STATUS L.E.D 2'. Refer to
Diagram 28 for location of these status L.E.D's in reference to the 'CLEAR' and 'DEFAULT' buttons on the heater
control board cover.
Diagram 28. NG-3 L.E.D identification
SECONDARY
STATUS L.E.D
The 'PRIMARY STATUS L.E.D 1' shows the first digit (tens) of the fault code and 'PRIMARY STATUS L.E.D 2'
shows the second digit (ones), e.g. fault code 35 would display as 3 flashes on 'PRIMARY STATUS L.E.D 1' and 5
flashes on 'PRIMARY STATUS L.E.D 2'.
Both L.E.D's will flash together for the first three flashes and then 'PRIMARY STATUS L.E.D 1' will stop while
'PRIMARY STATUS L.E.D 2' will flash two more times, example flash sequence below.
Primary Status L.E.D 1
Primary Status L.E.D 2
Rinnai
PRIMARY STATUS L.E.D 1
PRIMARY STATUS L.E.D 2
40
Ducted Gas Heater IM
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