Mitsubishi Electric PMCR-50VHA-200D KIT Installation Manual page 27

7. Remote controller operation
Temp. offset setting
This setting is to adjust the difference between the actual temperature and the temperature sensed by
the thermistor (THW1 or THW5) which tends to be lower due to heat leakage or something.
To set offset of DHW mode, select "DHW/Heating".
Note: Offset setting is not available in Heating mode of FTC2BR.
To set offset of Cooling mode, select "Cooling".
Temp./Analog signal
Set following 2 parameters to assign the target temperature value to analog signal figures.
1. Select "DHW/Heating" for the settings of DHW mode, Heating mode and Holiday mode, select "Cooling" for the
settings of Cooling mode.
2. "Lower" shows the target temp. of 4mA/1V/0V signal, "Upper" shows target temp. of 20mA/5V/10V signal (Refer to
the right chart).
Set upper and lower, press CONFIRM.
Self check
Error history of each unit can be checked via the remote controller.
1. With the F1 or F2 button, enter the refrigerant address, and press the SELECT button.
2. Error code and attribute will appear. "-" will appear if no error history is available.
3. To delete error history, press the F4 button on the screen that shows the error history.
4. A confirmation screen will appear asking if you want to delete the error history.
Running information
This function shows current temperature and other data of main component parts of both the indoor and outdoor units.
1. Press F2 and F3 buttons to set the Ref. address.
2. Use the function buttons (F1-F4) to enter index code for the component to be viewed. (See the service manual for
component index codes.)
3. Press CONFIRM.
Error history
Error history allows the service engineer to view previous error codes, the unit address and the date on which they occurred.
Up to 16 Error codes can be stored in the history the most recent Error event is displayed at the top of the list.
To delete an Error history item; from Error history screen press F4 button (Rubbish bin icon), then press F3 button (Yes).
Password protection
Password protection is available to prevent unauthorised access to the service menu by untrained persons.
1. When password input screen is displayed use buttons F1 and F2 to move left and right between the four digits, F3
to lower the selected digit by 1, and F4 to increase the selected digit by 1.
2. When you have input your password press CONFIRM.
3. The password verify screen is displayed.
4. To verify your new password press button F3.
5. Your password is now set and the completion screen is displayed.
Remote controller check
When the remote controller does not work properly, use the remote controller checking function to troubleshoot the problem.
1. Press F3 to start the remote controller check and see the check results.
2. The remote controller check results are displayed.
OK: No problems are found with the remote controller. Check other parts for problems.
E3: There is noise on the transmission line, or the indoor unit or another remote controller is faulty. Check the
transmission line and the other remote controllers.
NG (ALL0, ALL1): Send-receive circuit fault. Remote controller needs replacing.
ERC: The number of data errors is the discrepancy between the number of bits in the data transmitted from the remote
controller and that of the data that was actually transmitted over the transmission line. If data errors are found,
check the transmission line for external noise interference.
3. If the F3 is pressed after the remote controller check results are displayed, remote controller check will end, and the
remote controller will automatically reboot itself.
Note:
Check the remote controller display and see if anything is displayed (including lines). Nothing will appear on
the remote controller display if the correct voltage (8.5-12 VDC) is not supplied to the remote controller. If this
is the case, check the remote controller wiring and FTC2BR units.
THW5
FTC2BR
ΔT(h)
= T(a)-T(s)
T(s) = Sensed DHW tank temp.
TEMP OFFSET HEATING
(temperature offset setting for Domestic Hot Water)
T(a) = Actual flow water
temp.(outlet side)
ΔT(c) = T(a)-T(s) THW1
Outdoor unit
*1
Water piping
TEMP OFFSET COOLING
*1 Refrigerant-water HEX
(temperature offset setting for Cooling)
Target temp.
Upper
Lower
4mA---------------------20mA
1V------------------------5V
0V------------------------10V
T(a) = Actual DHW tank temp.
FTC2BR
T(s) = Sensed flow water temp.
Analog signal
en
EN-27