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Error Codes
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Error Code Description Details
Indoor Unit
1 0 - Indoor unit BLDC fan motor communications error.
• Fan motor has been removed or is defective. Refer to the resis-
tance and voltage check charts in this service manual.
• The system has detected the fan motor is not spinning.
• On new installs, verify installation manual and paperwork were
removed from fan discharge shroud during installation.
• Check the wiring plug and connections (if applicable).
11-
Communication error between hydro kit and inverter
compressor PCB.
Hydro kit is not receiving communications signal from inverter
compressor PCB.
1 2 - Hydro kit inverter compressor PCB error. Hydro kit inverter compressor PCB error.
1 3 - Hydro kit solar heat pipe temperature sensor error.
Solar heat pipe temperature sensor disconnected, shorted, or
opened.
1 4 - Hydro kit flow switch error. Flow switch failed to close.
15-
Hydro kit leaving water temperature has exceeded
185°F (85°C).
Temperature sensor is defective or there is hot water inflow.
16-
Hydro kit indoor unit water pipe temperature and ambi-
ent temperature sensor communication error.
Water inlet and outlet pipe temperature sensor disconnected,
shorted, or opened.
17-
• Hydro kit inlet pipe temperature sensor communica-
tion error.
• Outside air duct inlet pipe temperature sensor com-
munication error.
• Water inlet temperature sensor disconnected or shorted. Values
UHDGOHVVWKDQ&RUJUHDWHUWKDQ&OHVVWKDQ)
RUJUHDWHUWKDQ)
• Temperature sensor disconnected, shorted, or opened.
18-
Hydro kit outlet pipe temperature sensor communica-
tion error.
Outlet pipe temperature sensor disconnected, shorted, or
opened.
230
Refrigerant leak sensor error. Only displayed at the
indoor unit and its wired remote controller.
• Refrigerant leak sensor error; sensor is malfunctioning.
• Error will also be displayed if the function is enabled on the
wired remote controller, and there is not a sensor installed.
• Refrigerant leak is detected when >6,000 ppm.
• Enable the function through the function code on the remote
controller.
1. Operation stop.
2. Solenoid valve closes on the indoor unit side.
3. CH230 is displayed. If the communication baud is 1,200 bps,
then only the zone controller can display the CH230; central
controller cannot display the error due to lack of information.
4. Buzzer rings 2 long buzzes every 1 second. Ringing stops
when there is an input from the controller. (If there is a hard
lock, then only the controller can make the hard lock to stop
buzzing. If leak sensor measures under 1.5V, then it is consid-
ered normal and the buzzing stops.
5. To release the error, power needs reset.
237
Communication error between outdoor unit PCB and
indoor unit PCB. Only displayed at the indoor unit and
its wired remote controller.
Indoor unit communications PCB is not receiving signal from out-
door unit communications PCB for more than 3 minutes. Check
RS-485 communications for issues.
238
Communication error between outdoor unit PCB and
indoor unit PCB. Displayed at the indoor unit and its
wired remote controller.
Indoor unit communications PCB is not receiving signal from out-
door unit communications PCB for more than 3 minutes. Check
outdoor unit PCB for issues.
Table 69: Error Codes, continued.
ERROR CODE TABLES
Please refer to the Safety Precautions on pages 4-7 for more detail to prevent injury or death regarding the operation and service
troubleshooting of the Multi V product.
WARNING
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