Midea ESG-Inv M Series - P5 |TW-Out-TW-In| Value too Big Protection

ESG-Inv M
58
Midea ESG-Inv M Series Pool Heat Pump Manual
5.24 P5 Troubleshooting
Digital display output
Procedure
P5: |TW-out-TW-in| value too big
protection
Inlet water temperature sensor (TW-in),
outlet water temperature sensor is not
installed
Yes
Installed the temperature sensor
No
Inlet water temperature sensor (TW-in),
outlet water temperature sensor
1
connection on main PCB is loose
Yes
Ensure the sensor is connected properly
No
Inlet water temperature sensor (TW-in),
outlet water temperature sensor is
affected by moisture or water
Yes
Dry the sensor
No
Inlet water temperature sensor (TW-in),
outlet water temperature sensor has
short-circuited or failed
Yes
Replace the sensor
No
The water flow rate is not sufficient,
caused by pump not working, crushed or
bent water piping, high resistance in
water piping
Yes
Ensure water pump works, maximum
system head is within pump head and
flow rate range
No
Valves in the water system are closed.
Yes
Open all the valves.
No
Poor water quality or water piping
contains air
Yes
Clean the water system and purge air
from the water system
No
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