ThermoTec MINI - Trouble Shooting Guide; Parameter Table

13
4.Use and Operation Instruction of Wire Controller
3. Trouble Shooting Guide
Temp. is too much different
between water-inlet and outlet
Defrost
Malfunction
Ambient temp. sensor failure
No water flow or flow switch failure
Communication failure
Water inlet temp. sensor failure
Water outlet temp. sensor failure
Coil temp. sensor failure
Exhaust temp. sensor failure
High pressure protection
Low pressure protection
Low ambient temp. protection
TP
DF
Display
P04
E03
E08
P01
P02
P81
E01
E02
E06
Water temp. difference between
inlet and outlet is too large
Ambient temperature is too low
Is time to defrost
Cause
The ambient temp. sensor is open
or short circuit
No water flow of insufficient
water flow
Communication failure between
remote wire controller and main
board
The water inlet temp. sensor is
open or short circuit
The water outlet temp. sensor
is open or short circuit
The coil temp. sensor is open or
short circuit
The exhaust pipe temp. sensor is
open or short circuit
The exhaust pressure is high, high
pressure switch action
The suction pressure is low, low
pressure switch action
Solution
Check or change the ambient temp.
sensor
Check the water flow rate, ensure
that the filter is running and is not
dirty or blocked
Check the wire connection between
remote wire controller and main
board
Check or change the water inlet
temp. sensor
Check or change the water outlet
temp. sensor
Check or change the coil temp.
sensor
Check or change the exhaust temp.
sensor
Check high pressure switch and
cooling return circuit
Check low pressure switch and
cooling return circuit
Exhaust temp. protection
P82
The exhaust temp is high .
Check refrigerant is enough or not
Check the ambient temp. value
Check the pipe water flow and
whether water system is jammed or
not
End defrosting
P05
4. Parameter table
Set-point of mode target temp. cooling
Meaning
Default
Remarks
27℃
Adjustable
Set-point of target temp. heating mode
27℃
Adjustable
Set-point of target temp. auto mode
27℃
Adjustable
The common failure cause and solution.