
105
Maintenance and T
roubleshooting
Due to our policy of continuous product innovation, some specifications may change without notification.
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Hydro Kit Error Code Troubleshooting.
Error Code
Error Type
Cause
01*
Air temperature sensor error.
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02
Vapor side temperature sensor error.
Temperature sensor monitoring the refrigerant system vapor line is
disconnected or shorted.
03
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Controller and Hydro Kit.
Hydro Kit PCB is not receiving a communications signal from the Hydro
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unit PCB and Hydro Kit PCB.
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disconnected or shorted. Check Hydro Kit PCB for issues.
06
Liquid side temperature sensor error.
Hydro kit liquid side temperature sensor is disconnected or shorted.
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08*
Hydro Kit hot water storage tank temperature sensor
error.
A malfunction with the hot water storage tank temperature sensor was
detected. Pipe temperature sensor disconnected, shorted, or
opened.
09
Hydro Kit EEPROM error.
Communication error occurred between the Hydro Kit PCB board
and the onboard EEPROM. Check EEPROM for bent pins and
improper installation. If installed properly, potential EEPROM
failure.
11
Hydro Kit and outdoor unit PCB communications error.
No signal; communications error between Hydro Kit and outdoor unit
PCB.
12
Inverter PCB error.
Inverter PCB is malfunctioning.
13
Hydro Kit solar heat pipe temperature sensor error.
Solar heat pipe temperature sensor disconnected, shorted, or opened.
14
Hydro Kit flow switch error. Flow switch failed to close.
Check if water pipe operation is normal.
Check for water pipe blockage: Strainer could need cleaning, valve is
malfunctioning, locked, or operating in an unknown manner; air
could be present in water pipe; etc.
Check flow switch. Flow switch is malfunctioning, disconnected, etc.
15
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Temperature sensor is defective or there is hot water inflow.
16
Hydro kit indoor unit water pipe temperature and ambient
temperature sensor communication error.
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shorted, or opened simultaneously.
17*
Hydro Kit inlet pipe temperature sensor communication
error.
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Temperature sensor disconnected, shorted, or opened.
18*
Hydro kit outlet pipe temperature sensor communication
error.
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187
Hydro kit HEX burst error.
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during defrost operation.
TROUBLESHOOTING
Error Codes
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service troubleshooting of the Hydro Kit product.
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resolutions.