Omfort Et Ystem - Daikin DX17VSS Serie Instructions D'installation

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A ComfortNet inverter heating and air conditioning system
uses an indoor unit, outdoor unit and thermostat which
digitally communicate with one another via a two-way com-
munications path. The thermostat sends commands to the
indoor and outdoor units. The thermostat may request and
receive information from both the indoor and outdoor units.
This information may be displayed on the CTK04 thermostat.
The indoor and outdoor units also interact with one another.
The outdoor unit may send commands to or request informa-
tion from the indoor unit. This two-way digital communication
between the thermostat and subsystems (indoor/outdoor unit)
and between subsystems is the key to unlocking the benefits
and features of the ComfortNet system.
Two-way digital communication is accomplished using only
two wires. The thermostat needs 24 VAC for power. 4 wires
between the indoor unit and thermostat plus two wires be-
tween the indoor unit and outdoor unit are all that are required
to operate the system.
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The ComfortNet™ system permits access to additional sys-
tem information, advanced set-up features, and advanced
diagnostic/troubleshooting features. These advanced features
are organized into a menu structure. See the "Air condi-
tioner AdvAnced feAtUreS MenU" section for the
menu layout.
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Press "MENU", scroll down and press "ComfortNet User
Menu". Enter the date code (password) when prompted. The
date code is printed on the back of the thermostat; or press
"MENU > EQUIPMENT STATUS" and scroll down to find the
date code. After you enter the password, select "ComfortNet
User Menu", answer "Yes" to the following menu and select
"Outdoor Unit" to view the system menus.
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The air conditioner's diagnostics menu provides access to the
most recent faults. The six most recent faults are displayed on
the first screen. Faults are stored in order from most recent
to least recent. Any consecutively repeated fault is stored a
maximum of three times. Example: A leak in the system, low
refrigerant charge or an incompletely open stop valve can
cause the unit to flash error code E15. This error code sug-
gests that the unit is experiencing operation at low pressure.
The control will only store this fault the first three consecutive
times the fault occurs.
note: It is highly recommended that the fault list be cleared
after performing maintenance or servicing the system.
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This menu displays information about the systems current
status. This menu can be utilized to confirm correct function-
ality of the equipment and for troubleshooting purposes. The
following items will be displayed:
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PSdSt
time Stamp: Provides compressor run time in hours.
Mode: Current system operational mode (COOLING, COOL-
ING STARTUP, OIL RETURN, STOP).
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Time Stamp
Mode
Compressor Reduction Mode
Requested and Actual % Demand
Requested and Reported ID CFM
Outdoor Air Temperature
and Outdoor Fan RPM
Discharge Temperature
and Outdoor Coil Temperature
Outdoor Liquid Temperature
Pressure Sensor and Outdoor Suction
Temperature