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MULTI V Hydro Kit Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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Table 27: Hydro Kit Error Code Troubleshooting
Error Code Hydro Kit
Model
Error Type Cause
01 (K2, K3)
*Enabled for
Emergency
Operation
Air temperature sensor error Air temperature sensor has disconnected or short
circuited. (Check the wiring, connection at the
CN-ROOM socket on the Hydro Kit unit PCB, then
check the thermistor.)
02 (K2, K3) Gas side temperature sensor error Temperature sensor monitoring the refrigerant
system gas line is disconnected or shorted.
03 (K2, K3) No communication between Hydro Kit Wall
Mounted Controller and Hydro Kit
Communication has been lost between the Hydro
Kit Wall Mounted Controller and the Hydro Kit for a
specific period of time.
05 (K2, K3) Hydro Kit & outdoor (or water source) unit
communication error
Lost communication between the Hydro Kit and
the outdoor (water source) unit. Communication
cable is loose, disconnected or shorted.
06 (K2, K3) Liquid side temperature sensor error Temperature sensor monitoring the refrigerant
system liquid line is disconnected or shorted.
08 (K2, K3)
*Enabled for
Emergency
Operation
Indirect Hot Water Storage Tank temperature
sensor error
A malfunction with the indirect storage tank hot
water temperature sensor was detected. The
sensor and/or cable may be disconnected or
shorted.
09 (K2, K3) Indoor unit EEPROM error Communication error occurred between the
microprocessor on the Hydro Kit PCB board and
the onboard EEPROM chip. Check EEPROM chip
for bent pins and improper installation. If installed
OK, potential EEPROM failure.
11 K3 Hydro Kit unit and inverter PCB communication
error
Communication was lost between the Hydro Kit
main PCB and the R134a Inverter board. Check
for bent pins or loose connections in the wiring
harness plugs and socket connectors..
12 K3 Inverter PCB error R134a circuit inverter board has reported a
malfunction.
13 K2 Solar heating water circuit temperature sensor
error
Temperature sensor monitoring the solar heating
system's water circuit is disconnected or shorted.
14 (K2, K3) Flow switch error Flow switch malfunction.
15 (K2, K3) Water pipe overheated Hydro Kit leaving water has exceeded 185°F
(85°C).
16 (K2, K3) Water inlet & outlet temperature sensor error Indication that both the refrigerant to water heat
exchanger’s waterside inlet and outlet temperature
sensors simultaneously malfunctioned. Sensor
and/or cable may be disconnected or shorted.
17
(K2, K3)
*Enabled for
Emergency
Operation
Water inlet temperature sensor error The Hydro Kit refrigerant to water heat
exchanger’s waterside inlet temperature sensor
malfunctioned. Sensor and/or cable may be
disconnected or shorted.
TROUBLESHOOTING
Error Codes
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