Mitsubishi Electric QAHV-N560YA-HPB Service Handbook page 132

[ IX Troubleshooting ]
3. Maintenance setting 1
This category includes items that are set during test run and maintenance.
Setting procedure
Step 1
Set the dip switches
SW2 and SW3.
Step 2
Select the desired
item with the push
switch SWP3.
Step 3
Press the push
switches SWP1 (↑) or
SWP2 (↓) to increase
or decrease the value.
Step 4
Press the push switch
SWP3 to save the
change.
S e n s r o m e h t o d s e t t n i g
0: Local control method
1: Three-sensor method
2: Six-sensor method
Settings table
Items that can be set
Mode 1 Thermo-ON thermistor selection
Mode 1 Thermo-OFF thermistor selection
Mode 2 Thermo-ON thermistor selection
Mode 2 Thermo-OFF thermistor selection
Mode 3 Thermo-ON thermistor selection
Mode 3 Thermo-OFF thermistor selection
Number of water control modes
Mode 1 Thermo differential value
Mode 2 Thermo differential value
Mode 3 Thermo differential value
* Only for six-sensor method
Thermistor number 1: TH15, 2: TH16, 3: TH17
HWE1517A
Set the dip switches on the circuit board as follows.
SW2
10 5 6 7
OFF OFF OFF OFF
By setting SW3-9 to ON after setting the dip switches SW2 and SW3 as shown left,
the setting values can be checked.
(The settings cannot be changed.)
Press the push switch SWP3 to toggle through the item codes listed below.
Press the push switches SWP2 and SWP3 to change the value of the selected item.
Refer to the table below for information about the items that can be set.
Press SWP3 once within one minute of changing the setting with SWP1 or SWP2 to
save the setting.
Once the new setting is saved, the display will stop blinking and stay lit. The display will,
then, return to the item code display mode.
If SWP3 is not pressed within one minute, the change will not be saved, and the display
will return to the item code display mode.
Item code Increments
1 2 1 4 1
Item Initial
Unit
code value
1500 3 -
1501 3 -
1502 1 -
1503 2 -
1504 1 -
1505 3 -
1507 1 -
1508 10 ºC
1509 10 ºC
1510 10 ºC
- 125 -
SW3
8 9 10
ON OFF OFF
Lower limit Upper limit
0 2
Limits and increments
Increments Lower limit Upper limit
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 0
1 0
1 0
Initial value
0
3 (6*)
3 (6*)
3 (6*)
3 (6*)
3 (6*)
3 (6*)
3
30
30
30
GB