Air Handling Unit Interface
AHU-KIT-SP
MORIKAWA
SPECIFICATION
PSZ000Z308
34/38
MODEL NAME
MODEL TYPE
ISSUE
CLASSIFICATION
DWG NO.
REV.MARK PAGE
21.09.17
Error code
Error contents
Recovery condition
LED2 display (red) *
E1
AHU interface - remote control communication error
Normal reception of remote control signal
Indeterminate
E2
AHU interface address overlap
Resolution of address overlap
Once
E3
AHU interface - outdoor unit address pairing error
Resolution of address paring
Twice
E5
AHU interface - outdoor unit communication error
Normal reception of outdoor unit signal
Twice
E6
Heat exchanger sensor disconnection
Resolution of disconnection
Once
E7
Return air sensor disconnection
Resolution of disconnection
Once
E8
Heating overload error
Normalisation of heat exchanger temperature
Once
E14
Master
-
slave communication error
Normal reception of slave signal
Three times
E63
Emergency stop
Emergency stop release
Continuous
13. Error display
AHU interface detects the following errors.
To check the error code, remote control or Modbus device is required.
To detect abnormalities in the AHU interface (including the outdoor unit), either the digital output, remote control or Modbus device must be connected.
Be sure to connect either the digital output, remote control or Modbus for safe system use.
Note: in cascade control, Modbus communication is required to check the individual abnormal state of slave.
When an error occurs, LED 2 (red) on the interface blinks as shown in the table below.
* The cycle is 5 seconds (blinking 0.5 seconds).
