Mitsubishi Electric LGH-50RVS-E Installation Instructions Manual page 31

4. If trouble occurs during trial operation
Symptom
Lossnay does not operate even
when the operation switch of the
remote controller (PZ-62DR-E) is
pressed.
When M-NET is used, the Lossnay
does not operate by M-NET
system controller.
Air conditioner indoor unit or
external device does not interlock.
Lossnay does not stop.
The inspection indicator lamp (LED
1 Green) in the control box flashes.
The inspection indicator lamp (LED
2 Red ) in the control box flashes.
n When an error code blinks on the remote controller, follow the procedures shown in the installation and operating manuals provided with the
remote controller.
n If the remote controller is not used, operate after approximately 2 minutes of turning on the power for the Lossnay.
• Check the power supply. (The specified power supply is single-phase 220-240 V 50 Hz)
• Check for a short circuit or disconnection in the transmission cable. (Check that the voltage between
terminals in the transmission cables is 10 to 13 VDC for the PZ-62DR-E.)
• Check that a clearance of 5 cm is provided between the transmission cable and the power supply cable
and other transmission cables.
• Operate Lossnay independently using the trial operation switch (SW2-1) to see if it operates properly or not.
Lossnay operates
Lossnay doesn't operate
• Check if there are three or more remote controller connected. (The maximum is two.)
• Check the power supply. (Specified power supply: single-phase 220-240 V 50 Hz, cable diameter,
switch capacity
• Check if the power supply unit is connected or not, and if the power is supplied or not (For a system
with Lossnay only, it is necessary to install the power supply unit.)
• Check the transmission cable for short-circuit or broken wire (Check if 20 - 30 VDC is detected between
the terminals of transmission cable).
• Check that a clearance of 5 cm is provided between the transmission cable and the power supply cable
and other transmission cables.
• Operate Lossnay independently to see if it operates properly or not.
Lossnay operates
Lossnay doesn't operate
• Check Lossnay registration condition in the system remote controller.
• Check if the pulse input switch (SW2-2) is off. (Can be set from PZ-62DR-E)
• Check the overall cable length between the indoor unit or external device and Lossnay. (Refer to
technical manuals or other such documents.)
• Check the connections at the external control input terminal block (TM2).
In the case of voltage charged 12 or 24 VDC output device: Connect to external control input terminals
1 and 2.
In the case of Volt-free contact output device: Connect to external control input terminals
In the case of Mr. Slim (A control or K control): Connect to external control input terminals 1 and 3.
• Perform the registration using the remote controller for the air conditioner or MELANS. (Refer to the
installation instructions for the remote controller for the air conditioner or MELANS.)
• Check if the delay start time has been set.
• Check the following items after removing the transmission cable from external device.
Charged 12 or 24 VDC output device
Volt-free contact output device
Mr. Slim
• When multiple Lossnay units are connected, check the external signal is inputted into the main unit.
• Check that the trial operation switch (SW2-1) is set to off.
1 flash Fault on supply fan motor
2 flashes Fault on exhaust fan motor
4 flashes Fault on OA thermistor
5 flashes Fault on RA thermistor
8 flashes Fault on Pre-heater capacity or relay
9 flashes Fault on remote controller communication
10 flashes Fault on function setting
11 flashes Fault on power supply to remote controller
12 flashes Fault on CO
2
• 15 or 30 minutes in the delay start setting, LED lits ON.
• LED blinks just after power supply ON.
1 to 8 Error in M-NET communication
flashes
HEAD OFFICE:
TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
Remedy
Check the signal lines
Check the power supply
Inspect the transmission cable
Check the power supply
Operation signal
12 or 24 VDC
Resistance: 0 Ω
2 to 6 VDC (pulse signal) 2 to 6 VDC (pulse signal)
sensor, PZ-70CSB-E or PZ-70CSW-E
Turn off the power and immediately contact your
dealer.
Eng-31
and .
Y Z
Stop signal
0 VDC
Unlimited resistance Ω
Turn the power off and consult
your dealer.
Jun. 2021