Daikin ALTHERMA HT Service Manual page 88

Test Operation
1.3.3 Check Operation
 During check operation, mount front panel to avoid misjudging.
 Check operation is mandatory for normal unit operation.
 During this check operation different temperature should be read out.
 A procedure for space heating and domestic water heating should be followed.
 If forced operation should be started during a test operation, the test run will be aborted.
Temperature read-out mode
On the remote controller, the actual temperatures can be displayed.
1. Push and hold the ba button for 5 seconds.
2. Use the pi and pj buttons to display:
3. Push the ba button again to leave this mode. If no button is pressed, the remote controller
Procedure for space heating
1. Check the leaving water and entering water temperature through the remote controller read-
2. Push the z button 4 times so the t icon will be displayed.
3. Perform the test as follows (when no action is performed, the user interface will return to
4. The test run operation will end automatically after 30 minutes or when reaching the set
5. To resolve the error codes, see "Error codes".
6. Check the leaving water and entering water temperature through the remote controller read-
Procedure for domestic water heating
1. Check the domestic hot water tank temperature through the remote controller read-out
2. Push the w button for 5 seconds.
3. Keep the unit operating for 20 minutes and check the domestic hot water tank temperature
4. The operation will stop if the tank storage temperature has been reached.
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The leaving water temperature is displayed (icons l and = and
 The entering water temperature (icons l and = are blinking and the icon is flashing
slowly).
 The indoor temperature (icons l and = are blinking).
 The outdoor temperature (icons l and u are blinking).
 The hot water supply tank temperature (icons l and w are blinking).
leaves the display mode after 10 seconds.
out mode and write down the displayed values. See "Temperature read-out mode" on
page 76.
normal mode after 10 seconds or by pressing the z button once):
To test the space heating operation push the y button to start the test run operation.
temperature. The test run operation can be stopped manually by pressing the z button
once. If there are misconnections or malfunctions, an error code will be displayed on the
user interface. Otherwise, the user interface will return to normal operation.
out mode and compare them with the values noted with step 1. After 20 minutes of operation
an increase of the values should confirm the space heating operation.
mode. See "Temperature read-out mode" on page 76.
The w icon will start blinking with 1 second intervals.
through the remote controller again.
An increase of the value with 5°C should confirm the domestic water heating operation.
ESIE09-08B
are blinking).
Test Operation