Mitsubishi Electric LGH-F470RVX-E Instructions D'installation page 22

Trial operation (continued)
4. If trouble occurs during trial operation
Symptom
Will not operate even when the
operation switch for the remote
controller (PZ-61DR-E) is pressed.
When using M-NET, the operation
switch of Remote Controller (PZ-
61DR-E) is dead.
Does not operate even when
the operation switch for remote
controller for MELANS is pressed.
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 inspection number 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.
Eng-22
• Check the power supply. (The specified power supply is single-phase 208-230 V 60 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-61DR-E.)
• Check that the there is 2" (5 cm) or more separating the transmission cable from the power supply
cable and any other transmission cables.
• Run the Lossnay independently using the trial operation switch (SW2-1) and check if it runs.
Lossnay runs
Lossnay doesn't run -->
• Check if there are three or more remote controller connected. (The maximum is two.)
• Check the power supply. (Specified power supply: single-phase 208-230 V 60 Hz, wire dia. AWG 14 (ø
1.6), 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 DC 20 - 30 V is detected
between the terminals of transmission cable).
• Check if a clearance of 2" (5 cm) is secured between the transmission cable and the Power supply
cable and other transmission cables.
• Run Lossnay independently to see if it operates properly or not.
Lossnay operates
Lossnay doesn't operate -->
• Check whether or not there is a power supply unit and that the power has been turned on. (On systems
with only a Lossnay, a power supply unit is required.)
• Check if the pulse input switch (SW2-2) is off. (Can be set from PZ-61DR-E)
• Check the overall cable length between the indoor unit or external device and Lossnay. (Refer to
technical publications 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 uncharged a-contact output device: Connect to external control input terminals 1 and 3.
In the case of Mr. Slim (A control or K control): Connect to external control input terminals 1 and 2.
• Perform the registration operation using the remote control for the air conditioner or MELANS. (Refer to
the installation instructions for the remote controller for the indoor unit or MELANS.)
• Check if the delay has been set.
• Check the overall length of the transmission cable between the external device and Lossnay. (Refer to
technical publications or other such documents.)
• Check if the transmission cable from the external device has come off of the external control input terminal.
Charged 12 or 24 VDC output device
Uncharged a-contact output device
Mr. Slim
• Check, in the case of multiple units, whether the DIPSW SW5-10 of the Lossnay unit which is
connected to the external control input terminal is set ON, and check whether the DIPSW SW5-10 of
other Lossnay units are set to OFF.
• 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
6 flashes Fault on supply fan motor (Only LGH-F1200RVX-E)
7 flashes Fault on exhaust fan motor (Only LGH-F1200RVX-E)
8 flashes Fault on Pre-heater capacity or relay of TM370
9 flashes Fault on remote controller communication
10 flashes Fault on function setting
11 flashes Fault on power supply to remote controller
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
12 or 24 VDC
Resistance: 0 Ω
2 to 6 VDC (pulse signal) 2 to 6 VDC (pulse signal)
Turn off the power and immediately contact your
dealer.
Operation signal
0 VDC
Unlimited resistance Ω
Turn the power off and consult
your dealer.
Stop signal