Mitsubishi Electric QAHV-N560YA-HPB, Service Handbook

Page: 98 / 176

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HWE1517A GB
4
Check the following.
Check the checkbox.
All places with flow rate valve opening 1000 through 100 are 2 L/min or above?
If 2 L/min or below, air may not be bled out. Perform an air bleeding operation and water flow rate
adjustment operation again.
When there are multiple units, the values of the same pump output opening and the same valve opening
are not greater or less than those for other units by 10% and 2 L/min or more.
(In multiple-unit system, perform a water flow rate adjustment operation at the same time.)
All the values (item codes d01 through d09) are not “0” when the pump output opening is 16%. (Not
whole air is bled out.)
(Note 1) Change SW2-9 and SW2-3 as a stopgap procedure as shown in the table below, and then turn the power
on.
(Note 2) The table below shows the water flow rate adjustment operation status in 4 figures when the PCB DIP
switch is set as shown in Note 3.
(Note 3) PCB DIP switch settings
Multiple unit change-over switch
SW2-9
Local/internal change-over switch
SW2-3
N O F F O d e t e l p m o c t o n s a h n o i t a r e p o p u t r a t s n e h W
- - d e t e l p m o c s a h n o i t a r e p o p u t r a t s n e h W
Water flow rate adjustment operation status Display
g n - - d e t e l p m o c t o N
g - - - d e t e l p m o C
g n i - n o i t a r e p o n I
3 W S 2 W S
-10 -5 -6 -7 -8 -9 -10
ON OFF OFF OFF ON ON OFF
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