Mitsubishi Electric CITY MULTI PFFY-W20VCM-A, Техническое и сервисное руководство

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[
VII
Troubleshooting ]
- 19 -
HWE18170 GB
(2) SW3
7. Selecting the external static pressure
Four levels of external static pressure (0 Pa/10 Pa/40 Pa/60 Pa) are available for selection.
Set the setting either by using the switches on the control board (SW21-1, SW21-2, and SW21-5) or from the function selection
screen on the remote controller.
Note:
 When the static pressure setting was set from the remote controller, the actual setting and the switch setting on the
control board may not match because the latest setting from the remote controller overrides the previous setting. To
check the latest static pressure setting, check it on the remote controller, not on the switch.
 If the static pressure setting for the duct is lower than that for the unit, the fan of the unit may repeat start/stop, and
the outdoor unit may remain in a stopped state. Match the static pressure settings for the unit to that for the duct.
To set the external static pressure with the switches on the control board
To set the external static pressure from the function selection screen on the remote controller
Follow the instructions below and the instructions detailed in the remote controller manual for how to set the switches.
1. Set the function setting No. 32 (Switch setting/Function selection) to “2”.
2. Set the function setting No. 8 and No. 10 to appropriate values, according to the external static pressure.
Switch position Function Switch setting
ON OFF
1 Unit type Cooling only Heat pump
2 - - -
3 - - -
4 - - -
5 - - -
6 - - -
7 - - -
8 - - -
9 - - -
10 - - -
External static pressure SW21-1 SW21-2 SW21-5
0 Pa OFF ON ON
10 Pa OFF ON OFF
40 Pa OFF OFF OFF
60 Pa ON OFF OFF
External static pressure setting
Function setting No.
Initial setting Current setting
[Important]
Be sure to write down the
settings for all functions in
the “Current setting” row if
any of the initial settings has
been changed.
No. 8 No. 10
0 Pa 1 2
10 Pa 1 1 ○
40 Pa 2 1
60 Pa 3 1
HWE18170.book 19 ページ ２０１９年５月８日 水曜日 午前１０時３２分