72
ENGLISH
Troubleshoot
Error
Code
Indoor Device
ERV or ERV DX
AWHP(Hydro kit)
AHU
8
Hot water
thermometer
malfunction
Operate smoke
control through
smoke detection.
9
EEPROM ERROR
(indoor unit)
EEPROM ERROR
(indoor unit)
EEPROM ERROR
(indoor unit)
10
Indoor fan LOCK
(operation error)
Indoor fan Lock
(operation error)
11
HHU/boiler
communication
error (HHU)
12
Indoor mid-pipe sensor
error
Boiler error (HHU)
13
Heater terminal
block sensor
(A-PAC)
Solar heat
temperature sensor
error
Temperature (ERV,
air supply, external
air, Mix) is outside
acceptable range.
14
Indoor unit flow
switch operation
error
Humidity (ERV, air
supply, external
air) is outside
acceptable range
15
O-ROTOR
(BLDC FAN driver)
communication
error
Water pipe
overheating
CO
₂
value is within
acceptable range
16
Simultaneous
AWHP temperature
sensor error
Pressure (pressure
change, static
pressure) is outside
acceptable range
17
ERV DX air out
sensor
Inlet water
temperature sensor
error
Speed (ERV and
air supply flow) is
outside acceptable
range.
18
ERV DX air return
sensor
Outlet water
temperature sensor
error
19
ERV DX Main
PCB
←
Sub PCB
communication error
Elec/Heater outlet
water temperature
sensor error
20
ERV DX Main
PCB
→
Sub PCB
communication error
Elec/heater error
Summary of Contents for AC Smart BACnet
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