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EUWA15HDW15
Инструкция по эксплуатации Страница: 13

Daikin EUWA15HDW15 Инструкция по эксплуатации онлайн [13/18] 535208

■ LOADDOWN (DWN – refer to the thermostat parameters): starts

counting when a thermostat step change has occurred. During

the countdown, the unit will not be able to go to a lower

thermostat step.

■ FLOWSTART (FLOWSTART – 15 sec): counts down when the

water flow through the evaporator is continuous and the unit is

in standby. During the countdown, the unit cannot start up.

■ FLOWSTOP (FLOWSTOP – 5 sec): starts counting when the

water flow through the evaporator stops after the flowstart timer

has reached zero. If the water flow has not restarted during the

countdown, the unit will shut down.

■ STARTTIMER (COMPR. STARTED – 5 sec): starts counting

whenever a compressor starts up. During the countdown, no

other compressor can start up.

■ GUARDTIMER 1/2/3 (GRD1,2,3 – 60 sec): starts counting when

the compressor of circuit 1, respectively circuits 2 and 3, has

been shut down. During the countdown, the compressor cannot

be restarted.

■ ANTIRECYCLING 1/2/3 (AREC1,2,3 – 240 sec): starts counting

when the compressor of circuit 1, respectively circuits 2 and 3,

has started. During the countdown, the compressor cannot be

restarted.

To check the actual value of the software timers, proceed as follows:

1 Press the

key to enter the timers menu.

The controller displays the actual value of the GENERAL TIMERS: the

loadup timer, the loaddown timer, the flowstart timer, the flowstop

timer (when the unit is on and the flowstart timer has reached zero)

and the starttimer.

2 Press the

key to check the remaining timers.

The controller shows the actual value of the COMPRESSOR TIMERS:

the guard timers (one per circuit) and the antirecycling timers (one

per circuit).

Tasks of the safeties menu

Listing activated safeties and checking the unit status

If the alarm buzzer is activated and the user presses the

key, the

controller automatically enters the safeties menu.

■ The controller will enter the UNIT SAFETY screen of the safeties

menu when a unit safety was the cause of shutdown. This

screen provides the following information:

– the activated safety: reverse phase protector or flow switch,

– the unit status at the moment of shutdown: the inlet water

temperature and the ambient temperature.

■ The controller will enter the C1, C2 or C3 SAFETY screen of the

safeties menu when a safety of circuit 1, respectively circuit 2

or 3 was activated. These screens provide information about

the circuit status at the moment of shutdown: the circuit outlet

water temperature, the inlet water temperature and the ambient

temperature. The controller cannot indicate the activated safety

since all safeties of a circuit are connected in series.

1 Press the

key when the alarm buzzer is activated.

The appropriate safety screen appears.

2 If more than one screen is available (indicated by means of a,

z or e), use the

key to consult them.

Consulting the limit values

Correct operation of the unit can only be guaranteed if the limits for

outlet water temperature, inlet water temperature and ambient

temperature are respected. These limits are according to factory

settings and can only be consulted if the safeties menu is

accessible.

To consult the limit values, proceed as follows:

1 Enter the safeties menu using the

key.

2 Press

to enter the TEMPERATURE LIMITS screen.

The controller automatically returns to the safety screen after

20 seconds.

Tasks of the history menu

Checking the safety-info and the unit status after a reset

The information available in the safeties menu is also stored in the

history menu, where it is stored after resetting the unit or the circuit.

In this way, the history menu provides a means of checking the unit

status at the moment of the latest shutdowns.

To check the safety info and the unit status, proceed as follows:

1 Press the

key to enter the history menu.

The controller enters the UNIT HISTORY screen which contains the

following information: the number of shutdowns, the unit safety

which caused the most recent shutdown and the unit status at the

moment of this shutdown.

2 Press

to consult the C1, C2 or C3 SAFETY screens.

These history screens contain the following information: the

number of circuit 1 (2 or 3) shutdowns and the circuit status at the

most recent shutdown.

Tasks of the info menu

Consulting additional unit information

1 Press the

key to enter the info menu.

The controller enters the UNIT INFORMATION screen which contains

the following information: the unit name, the refrigerant used and

the manufacturing (serial) number.

2 Press

to consult the second UNIT INFORMATION screen.

This screen contains information about the controller's software

version.

Tasks of the input/output menu

Checking the status of the inputs and outputs

The input/output menu provides a means of checking the status of

the digital inputs and the status of the relay outputs.

The digital inputs are:

■ SAFETY 1 (2 or 3): indicates whether or not one of the circuit

safeties is activated.

■ FLOWSWITCH: indicates the status of the flowswitch: activated or

de-activated.

■ DUAL SETPOINT: indicates the position of the remote dual setpoint

switch: setpoint 1 or setpoint 2.

■ REM. START/STOP: indicates the position of the remote on/off

switch.

■ REV. PHASE PR.: indicates whether or not the reverse phase

protector is activated.

Daikin EUWA15HDW15 Инструкция по эксплуатации онлайн [13/18] 535208

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