Airwell /yaz218, Service Manual

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CONTROL SYSTEM
SM YAZ218 1-A.2 GB 11-19
4. During the test, the unit will show count down counter (in minutes). The test maximum time
is 20 minutes.
5. When the test is finished, the system will show the test result, pass or fail.
6. You can scroll the menu to observe:
a. Observe the matrix result
b. Guide for problem correction.
7. For fixing problem, copy on paper the results displayed results, power off the unit, and then
fix the problem accordingly. Do not do any wire fixing under power!
Note:
You can exit the installation test any moment by pressing Esc for 5 seconds.
When exiting the test, the system will still keep the latest result from the previous test.
11.6.6 Faults during the test
Upon the following, the system will terminate installation test:
Fault (display) Reasons
‘OAT’ blink Outdoor ambient temperature is too clod, cannot run
installation test.
‘IDU’ blink The selected number of the installed indoor units by the
technician does not match the number of indoor units detected
by the system.
Display indoor or
outdoor fault as in
diagnostics Check indoor and outdoor diagnostics.
ICT disconnected will be tested during the first 3 minutes of
installation test.
Note: When the system terminates the tests due to the problem above, the matrix results will
present partial test.