Error List; Trial Operation - Mitsubishi Electric VL-350CZPVU-L-E Installation Manual

6.6 Error list

№ Error item Error code
Commissioning
1
External device error
2
Fan motor error
3
Temperature sensor
error
4
RA temperature
5 sensor error
Function setting error
6

6.7 Trial operation

6.7.1 Operation check by using the controller
After installing the product (mounting, wiring, controller's setting), please check the operation of the system.
■ Perform trial operation with the user in attendance.
- Noise sometimes increases for several minutes after the power to the product is turned off. This is operation
to maintain the ventilation air volume at the appropriate volume, and is not a malfunction.
- It is difficult to tell the ventilation state when there is wind outside or during operation of a range hood fan, etc.
When turning on the power, stop operation of the range hood fan or other noise sources.
Press each of the buttons by following the procedure below to check that operation is normal.
Operation Item
1. Powering on
ON/OFF lamp
2. Starting operation
3. Selecting air volume
4. Selecting the ventilation
mode
ON/OFF lamp
5. Stopping operation
* When the backlight is off, pressing any button turns the backlight on and does not perform its function. (Except the
Unit operation
0900 Commissioning operation
3126 Heater output: OFF
Fan output: OFF
4116
Heater output: OFF
Supply air fan output: OFF
Heater output: OFF
5101
Bypass ventilation is
prohibited.
The Heat exchange
5102 ventilation is fixed when the
ventilation mode is Auto.
Fan output: OFF
7113 Heat exchange ventilation
is fixed.
Operation Pad
Lossnay
Normal Medium Boost Purge
F2
Auto Auto HeatEX Bypass
F3
Lossnay
Error code reset
End the commissioning
Stop the product.
Stop the product.
Cancel the error state.
Cancel the error state.
Power supply reset
Display
Turn the power on
Please Wait
*It takes approximately five minutes to switch the screen.
10%
AM12:00 Sun
When power is supplied at factory default, the fan starts
running. (See: 6.4.2.7 Control mode [Enable OFF button])
Purge Auto
Fan Mode
Press the
The fan speed is switched
At factory default setting,
(See: 6.4.2.7 Control mode [Fan Speed])
Press the
The ventilation mode switches in order Automatic → Heat
exchange → Bypass
At factory default setting,
(See: 6.4.2.7 Control mode [Manual bypass])
AM12:00 Sun
Power break
At factory default setting, the ON/OFF button does not
stop the product.
(See: 6.4.2.7 Control mode [Enable OFF button])
Eng-48
Description
The error is indicated when the product is in
operation in the commissioning mode.
The error is indicated when an abnormal
temperature is detected by the built-in OA
thermistor. It is assumed that there are wrong
connections or wrong capacities of heaters.
Failure in fan motor
The error is indicated when the built-in OA
thermistor is in malfunction.
The error is indicated when the built-in RA
thermistor is in malfunction.
There is an error in the SW6 setting.
Step
button
is skipped.
button
is skipped.
button)