Daikin EUWY 24KBZW1 Series Service Manual page 194

Pre-Test Run Checks
1
Leak when in
heating mode
1 2
Hot Cool
Hot Cool
3
4
5
4–28
Check the operation conditions in the table below to find the cause of the malfunction.
The procedure to solve the problem is described in the last column.
See the illustration to situate the numbers in the table heading.
3 4 5
Hot as in Cool as Temper-
column in ature of
1 column valve
1 body
Hot as in Cool as Warmer
column in than
1 column valve
1 body
6 Cause
Warmer The piston
than needle is leaking
valve at the end of the
body slide.
Warmer The piston
than needle and pilot
valve needle are leak-
body ing.
Part 4 – Commissioning and Test Run
ESIE11-02
Procedure
1. Operate the valve several
times.
2. Recheck.
3. If there is an excessive
leak, replace the valve.
1. Operate the valve several
times.
2. Recheck.
3. If there is an excessive
leak, replace the valve.