Test Run Control - Daikin SkyAir Service Manual

General Functionality
1.9

Test Run Control

Purpose When operating the RZQ(S) units for the first time after installation, the unit will - depending on
the selected operation mode - perform a test run operation first.
Situation 1 Cooling - first operation after installation in "Cooling mode"
Cooling thermostat ON
Situation 2 Cooling - first operation after installation in "Test run mode"
Cooling Operation by
Test run button
Situation 3 Heating - first operation after installation in "Heating mode"
Heating thermostat ON
Situation 4 Heating - first operation after installation in "Test run mode"
Heating Operation by
Test run button
Note:
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When running in test run mode, the unit will sense on site installation parameters (e.g.:
failure to open stop valves,..) and indicate the applicable malfunction code if required.
If the remote controller shows E3, E4 or L8 as an error code, there is possibility that either
the stop valve is closed or the air flow outlet is obstructed.
Check the inter unit branch wiring connection (1-2-3 wiring) when the error code U4 or UF is
displayed on the remote controller.
When the error code U2 is displayed on the remote controller, check for voltage imbalance.
When the error code L4 is displayed on the remote controller, there is possibility that the air
flow passage is closed.
When there is no error code display, cooling operation continues without interruption.
(However, this control is once again performed after refrigerant is recovered by means of the
pump down switch and at the time of the first operation after the outdoor PC board
replacement.)
Cooling operation in
"Test run mode" for 3
minutes
Cooling operation in
"Test run mode" for 3
minutes
Heating operation can
not be done.
Heating operation in
forced thermostat ON.
SiBE28-804
Normal cooling
operation
Cooling operation in
forced thermostat ON.
Functional Description