Air Bleed Operation Primary Circuit - Mitsubishi Electric ZENSHIN Ecodan QAHV Setup Manual

5. Air bleed operation Primary Circuit

For each circuit, perform at least three sets of at least 5 minutes in duration. During the air bleeding
operation, use the method below (*1) to display the water flow rate during operation and check it is stable
Step Procedure
1 Water Level check
2 Power operation
3 PCB Dipswitch Set
4 Operation
5 Stop Operation
(Note 1) As a stopgap measure, change the settings of SW2-9 and SW2-3 as shown in the table below,
then restart the power.
When start-up operation has NOT completed
When start-up operation has completed
If water shutoff error 2601 occurs during the air bleeding operation, resolve the issue, then change the
setting of PCB slide SWS1 from LOCAL to OFF, and back to LOCAL again. The air bleeding operation starts
again.
(You can clear water shutoff error by turning the power OFF and ON again. The equipment enters standby
mode in this case.)
(You can also clear water shutoff errors by changing the setting of PCB DIP SW1-8 or 1-9 from ON to OFF.
Turning DIP SW1-8 OFF starts circulation heating circuit air bleeding (manual). Turning DIP SW1-9 OFF
starts water supply circuit air bleeding (manual).)
Operation & check point
Check the water level is full
Turn on power
Change the setting of SW 1-8 to ON
SW1
8 9
ON OFF
Set SWS1 from Remote to Local
*When the pump has become quiet
and the flow rate is stable end
operation
Change DipswitchSW1-8 from On to
Off
Change SWS! From Local to Remote
Multiple change-over
switch
SW 2-9
9
Information
If the start-up operation has not
SW2-9 and SW2-3 need to be set as a
stopgap measure (see Note 1).
Note, the compressor does not
*The pump and Valve open to allow
The pump and valve will now close
Local/internal change-over
OFF
-
-
finished,
-
operate
water flow
switch
SW 2-3
ON
-