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o C oolant Circulation Operation
This operation forcibly drives the coolant pump and the coolant electric three-way valve. It is used for refilling cool-
ant and for removing air from the coolant circuit.
Note: C heck that the coolant circuit contains some coolant before performing this operation. The pump may be dam-
aged if forced operation is started without any coolant.
1) Press the HOME (S004) key for 1 second or more. The menu item number " " will be displayed.
2) Next press the UP (S005), DOWN (S006) keys to display menu item number " "
3) After " " the test run/forced setting display
" " will appear (Figure 7). Press the SET
(S007) key while " " is displayed.
4) P ress the SET (S007) key in the forced cooling test
run setting mode to select one of the displays shown in
the table below. Press the UP (S005) or DOWN (S006)
key to select " " (forced coolant circulation
setting). (Figure 8)
↑DOWN
↓UP
5) S etting and Canceling Forced Coolant Circulation Operation
Press the SET (S007) key for 1 second or more while forced coolant circulation setting is selected. The coolant
pump will operate and the coolant electric three-way valve will cycle repeatedly through closing completely for
3 minutes, then opening completely for 1 minute and 15 seconds. During this time, the forced setting in progress
display will appear (the TEST/WARNING LED (D052) will light). To cancel the forced coolant circulation set-
ting, press the SET (S007) key for 1 second or more. The forced setting in progress display will be cleared (the
TEST/WARNING LED (D052) will go out) and the display will return to the forced setting selection operation.
Display
Forced cooling test run setting
Forced heating test run setting
Forced valve opening setting
Forced coolant circulation setting
Forced bypass valve closing
Coolant air bleed mode
Forced engine distributor mode
Forced engine feedback
Forced engine adjustment valve closing
Forced compressor oil replenish (W MULTI)
Forced compressor oil supply (W MULTI)
Forced outdoor defrosting
Ignore pressure sensor
Force fuel gas solenoid valve off
Function
I - 6
Figure 7
Figure 8
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