Troubleshooting - Oasis I Series Installation & Operation Manual

7. Troubleshooting

7.1 Electronic Control Fault Table
Protect/fault
Inlet Temp. Sensor Fault
Outlet Temp. Sensor Fault
Ambient Temp. Sensor Fault
Coil1 Temp. Sensor Fault
Suction Temp. Sensor Fault
Discharge Temp. Sensor Fault
High Pressure Prot.
Low Pressure Prot.
Flow Switch Prot.
Anti-freezing Prot.
Primary Anti-freezing Prot.
Secondary Anti-freezing Prot.
Inlet and outlet temp. too big
Low temperature protection
Comp. Overcurrent Prot.
Exhaust Air over Temp Prot.
Communication Fault
Antifreeze Temp. Sensor Fault
Waterway Anti-freezing Prot.
EC fan feedback Fault
Pressure sensor Fault
Fan Motor1 Fault
Low AT Protection
Fan Motor2 Fault
Communication Fault (speed
control module)
Coil2 Temp. Sensor Fault
1 1
Fault Reason
display
P01 The temp. Sensor is broken or short circuit
P02 The temp. Sensor is broken or short circuit
P04 The temp. Sensor is broken or short circuit
The temp. Sensor is broken or short circuit
P05
P07 The temp. Sensor is broken or short circuit
P081 The temp. Sensor is broken or short circuit
Sudden drop in water flow/poor water flow/
E01
Failed High pressure switch
E02 Low pressure1 protection
E03 No water/little water in water system
Water flow is not enough
E07
E19 The ambient temp. Is low
E29 The ambient temp. Is low
Water flow is not enough
E06
and low differential pressure
Non The environment temp. is low
E051 The compressor is overload
P082 The compressor is overload
E08 Communication failure between wire
controller and mainboard
P09 Antifreeze temp sensor is broken or short
circuited
E05 Water temp. or ambient temp. is too low
F051 There is something wrong with fan motor and
fan motor stops running
PP The pressure Sensor is broken
1. Motor is in locked-rotor state
F031 2. The wire connection between DC-fan motor
module and fan motor is in bad contact
TP Ambient temp is too low
F032 1. Motor is in locked-rotor state
2. The wire connection between DC-fan motor
module and fan motor is in bad contact
E081 Speed control module and main board
communication fail
P15 The temp. sensor is broken or short circuit
Elimination Methods
Check or change the temp. sensor
Check or change the temp. sensor
Check or change the temp. sensor
Check or change the temp. sensor
Check or change the temp. sensor
Check or change the temp. sensor
Turn heater on and off at power source
(first ensure good water flow). Check the
pressure switch (Technician required)
Check the pressure switch and cold circuit
Check the pipe water flow and water
pump
Check the pipe water flow and whether
water system is jammed or not
Check the pipe water flow and whether
water system is jammed or not
Check whether the system of the
compressor running normally
Check whether the system of the
compressor running normally
Check the wire connection between
remote wire controller and main board
check and replace this temp sensor
Check whether fan motor is broken or
locked or not
Check or change the pressure sensor or
pressure
1. Change a new fan motor
2. Check the wire connection and make
sure they are in good contact
1. Change a new fan motor
2. Check the wire connection and make
sure they are in good contact.
Check the communication connection
Check or change the temp. sensor
2 1