Hitachi RAC-18WPD, Service Manual

Page: 80 / 93

Checking the indoor unit electrical parts
Is the "timer lamp" (orange) of the indoor unit blinking?
Introduction
Check results and next check items
Yes Yes
Yes
ˉ
Yes
ˉ
No
No
ˉ
Check 1 Check 2 Check 3 Check 4
How many times does the time lamp
blinding
Set the remote control unit to cooling mode, temperature setting 16
ć
(summer), heating mode, temperature setting
32
ć
(winter) and operate the product.
ǂ
ǂǂǂ
Check 2: Has the product received the remote control signal and has the "operation lamp" gone on? (Yes/No)
If you responded "Yes" to Check 2:
ǂǂǂ
Check 3: Is the compressor of the outdoor unit running? (Yes/No)
If you responded "No" to Check 2:
ǂǂǂ
Check 4: Does the "emergency operation switch" work? (Yes/No)
First check the failure phenomenon and status, and then move on to elaborate diagnosis.
Initiating troubleshooting
No
Yes
Turn off the power, wait at least 5 seconds, turn it back on, and observe the way the horizontal vanes move for about
30 seconds.
ǂǂǂǂǂ
Check 1: Have the horizontal vanes moved? (Yes/No)
Go on to "The power will not become turned on".
Next check item
Go on to "The compressor will not run".
Go on to "The product will not receive the remote
control signal".
not 4 times 4 times
outdoor ele.unit check
No
No No
time lamp blinking,
according to the
self-diagnosis display.
please
80