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Daikin EWAP160MBYN Инструкция по эксплуатации онлайн [17/22] 524344
![Daikin EWAP160MBYN Инструкция по эксплуатации онлайн [17/22] 524344](/views2/1657062/page17/bg11.png)
EWAP110~340MBYNN
Packaged air-cooled water chillers
4PW22677-1B
Operation manual
16
Symptom 4: The circuit does not start up
Symptom 5: One of the following safety devices is activated
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
Symptom 6: Unit stops soon after operation
POSSIBLE CAUSES CORRECTIVE ACTION
One of the following safety devices is
activated:
• Compressor thermal protector (Q*M)
•Overcurrent relay (K*S)
• Discharge thermal protector (S*T)
•Low pressure
• High pressure switch (S*PH)
•Reverse phase protector (R*P)
•Freeze-up
Check on the controller and refer to
Symptom 5: One of the following
safety devices is activated.
The anti-recycling timer is still active. The circuit can only start up after
approximately 10 minutes.
The guard timer is still active. The circuit can only start up after
approximately 1 minute.
The circuit is limited to 0%. Check the enable/disable capacity
limitation remote contact.
Symptom 5.1: Overcurrent relay of compressor
POSSIBLE CAUSES CORRECTIVE ACTION
Failure of one of the phases. Check fuses on the supply panel or
measure the supply voltage.
Voltage too low. Measure the supply voltage.
Overload of motor. Reset. If the failure persists, call your
local dealer.
RESET Push the blue button on the over-
current relay inside the switch box
and reset the controller.
Symptom 5.2: Low pressure
POSSIBLE CAUSES CORRECTIVE ACTION
Waterflow to water heat exchanger
too low.
Increase the waterflow.
Shortage of refrigerant. Check for leaks and refill refrigerant,
if necessary.
Unit is working out of its operation
range.
Check the operation conditions of
the unit.
Inlet temperature to the water heat
exchanger is too low.
Increase the inlet water temperature.
Dirty evaporator. Clean the evaporator or call your
local dealer.
Low pressure safety setting too high. Refer to the installation manual
"Customization in the service menu",
paragraph "Setting of the minimum
outlet water temperature" for correct
values.
Flowswitch is not working or no
waterflow.
Check the flowswitch and the water
pump.
RESET After pressure rise, this safety resets
automatically, but the controller still
needs to be reset.
Symptom 5.3: High-pressure switch
POSSIBLE CAUSES CORRECTIVE ACTION
Condenser fan does not operate
properly.
Check that the fans turn freely. Clean
if necessary.
Dirty or partially blocked condenser. Remove any obstacle and clean
condenser coil using brush and
blower.
Inlet air temperature of the
condenser is too high.
The air temperature measured at the
inlet of the condenser may not
exceed 43°C.
Fan turning in the wrong direction. Two phases of the power supply to
the fan motor must be inverted (by a
licensed electrician).
RESET After pressure decrease, push the
button on the high-pressure switch
and reset the controller.
Symptom 5.4: Fan thermal protector is activated
POSSIBLE CAUSES CORRECTIVE ACTION
Mechanical failure (fan is blocked). Check that the fan rotates freely.
Air flow in the unit too low or outdoor
temperature too high.
Clean the air heat exchanger
properly.
RESET After temperature decrease, the
thermal protector is reset
automatically.
If the protector is activated
frequently, replace the motor or call
your local dealer.
Symptom 5.5: Reverse phase protector is activated
POSSIBLE CAUSES CORRECTIVE ACTION
Two phases of the power supply are
connected in the wrong phase
position.
Invert two phases of the power
supply (by licensed electrician).
One phase is not connected
properly.
Check the connection of all phases.
RESET After inverting two phases or fixing
the power supply cables properly,
the protector is reset automatically,
but the controller still needs to be
reset.
Symptom 5.6: Discharge thermal protector is activated
POSSIBLE CAUSES CORRECTIVE ACTION
Unit is working outside the operation
range.
Check the operation condition of the
unit.
RESET After temperature decrease, the
thermal protector resets
automatically but the controller still
needs to be reset.
Symptom 5.7: Flowswitch is activated
POSSIBLE CAUSES CORRECTIVE ACTION
No waterflow or too low waterflow. Check the water pump and the water
circuit for obstructions.
RESET After finding the cause, the
flowswitch is reset automatically, but
the controller still needs to be reset.
Symptom 5.8: Freeze-up protection is activated
POSSIBLE CAUSES CORRECTIVE ACTION
Waterflow too low. Increase the waterflow.
Inlet temperature to the evaporator is
too low.
Increase the inlet water temperature.
Flowswitch is not working or no
waterflow.
Check the flowswitch and the water
pump.
RESET After temperature increase the
freeze-up is reset automatically, but
the circuit controller needs to be
reset.
Symptom 5.9: Compressor thermal protector is activated
POSSIBLE CAUSES CORRECTIVE ACTION
Compressor motor coil temperature
too high.
Compressor is not cooled sufficiently
by the refrigerant medium.
RESET After temperature decrease the
thermal protector is reset
automatically, but the circuit
controller needs to be reset.
If the protector is activated
frequently, call your local dealer.
POSSIBLE CAUSES CORRECTIVE ACTION
The schedule timer is activated and
is in off mode.
Work according to the settings in the
schedule timer or disable the
schedule timer.
One of the safety devices is
activated.
Check safety devices (refer to
Symptom 5: One of the following
safety devices is activated).
Voltage is too low. Test the voltage in the supply panel
and, if necessary, in the electrical
compartment of the unit (voltage
drop due to supply cables is too
high).
Содержание
- Operation manual 1
- Packaged air cooled water chillers 1
- Electrical specifications 2
- Introduction 2
- Operation manual 2
- Technical specifications 2
- Description 3
- Escription 3
- Important information regarding the refrigerant used 3
- Function of the main components 4
- Safety devices 4
- Internal wiring parts table 5
- Before operation 6
- Checks before initial start up 6
- Efore operation 6
- Power supply connection and crankcase heating 6
- Water supply 6
- Digital controller 7
- General recommendations 7
- Operation 7
- Peration 7
- Working with the unit 7
- Consulting actual operational information 8
- Setting the language 8
- Switching the unit off 8
- Switching the unit on 8
- Switching units on off in a dicn system 8
- Adjusting the temperature setpoint 9
- Resetting the unit 9
- Advanced features of the digital controller 10
- All menus are directly accessible using the corresponding key on the digital controller or through the main menu refer to how to enter a menu on page 6 the down arrow x on the display indicates that you can go to the next screen of the current menu using the h key the up arrow w on the display indicates that you can go to the previous screen of the current menu using the g key if c is displayed this indicates that you can either return to the previous screen or can go to the next screen 10
- Depending upon the settings in the user settings menu the setpoints menu can either be entered directly or by means of the user password 10
- Readout menu 10
- Setpoints menu 10
- The usersettings menu protected by the user password allows a full customization of the units 10
- This chapter gives an overview and a brief functional description of the screens provided by the different menus in the following chapter you will find how you can set up and configure the unit using the various menu functions 10
- Timers menu 10
- Usersettings menu 10
- Additionally the number of safeties that already occured can be consulted on the first line of the history screens 11
- Along with the basic information more detailed information screens can be consulted while the safety menu is active press the q key screens similar to the following will appear 11
- History menu 11
- Info menu 11
- Input output menu 11
- Safeties menu 11
- The history menu contains all the information concerning the latest shutdowns the structure of those menus is identical to the structure of the safeties menu whenever a failure is solved and the operator performs a reset the concerning data from the safeties menu is copied into the history menu 11
- The input output menu gives the status of all the digital inputs and the relay outputs of the unit 11
- The safeties menu provides useful information for trouble shooting purposes the following screens contain basic information 11
- To change the user password 11
- To check the capacity mode and feedback 11
- To check the status of the changeable digital inputs note that for a unit in a dicn system the inputs apply to this unit it will be the remote input on the master unit however that will be determining for the operation of the unit 11
- To check the status of the changeable relay output 11
- To check the status of the discharge thermal protector and the compressor thermal protector 11
- To check the status of the fanspeed relays 11
- To check the status of the high pressure switch the reverse phase protector and the overcurrent relay 11
- To check the status of the power relays 11
- To check the status of the pump the alarm and the evaporator heater voltage free contacts 11
- To check the time and control mode at the moment of the unit shutdown 11
- To check whether or not the emergency stop device is active and if there is any waterflow to the evaporator 11
- To check which was the status of the compressors at the moment of shutdown 11
- To check which were the evaporator and condenser inlet water temperature and the evaporator outlet water temperature 11
- To check which were the pressures of the circuit at the moment of shutdown 11
- To check which were the total amount of running hours of the compressor and the ambient temperature at the moment of shutdown 11
- To consult additional information about the unit such as the unit type and the refrigerant used 11
- To consult information about the circuit safety which caused the shutdown 11
- To consult information about the controller s software version 11
- To consult information about the dual pump which caused the shutdown 11
- To consult information about the network safety which caused the shutdown 11
- To consult information about the pcb 11
- To consult information about the unit safety which caused the shutdown 11
- To consult time and date information 11
- User password menu 11
- Defining and activating the control mode 12
- Defining the capacity limitation settings 12
- Defining the pump control settings 12
- Defining the schedule timer 12
- Defining the thermostat settings 12
- Entering the user settings menu 12
- Network menu 12
- Defining dual evaporator pump control 13
- Defining free cooling 13
- Defining the display settings 13
- Defining the network settings 13
- Defining the floating setpoint settings 13
- Activating or deactivating the setpoints password 14
- Checking the actual value of the software timers 14
- Defining bms control 14
- Checking the safety info and the unit status after a reset 15
- Checking the status of the inputs and outputs 15
- Consulting additional unit information 15
- Listing activated safeties and checking the unit status 15
- Changing the user password 16
- Roubleshooting 16
- Troubleshooting 16
- Aintenance 18
- Disposal requirements 18
- Maintenance 18
- Maintenance activities 18
- Inlet water temperature control outlet water temperature control 19
- Schedule timer example 19
- Thermostat parameters 19
- Floating setpoint working 20
- Free cooling on ambient temperature 20
- Free cooling on difference between inlet water evaporator temperature and ambient temperature 20
- Free cooling working 20
- Oftware structure 21
- Q q q q q 21
- Pw22677 1b 22
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