Crystal CHP075PX, Руководство пользователя

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Four-way valve reversal
failure
EE26
1. Four-way valve reversal failure
2. Lack of refrigerant (no detect when TH2
or TH1 malfunction)
1. Switch to Cooling mode to check the
4-way valve if it has been reversed
correctly
2. Change a new 4-way valve
3. Fill with gas
EEPROM data read
malfunction
EE27
1. Wrong EEPROM data in the program or
failed input of EEPROM data
2. Main board failure
1. Re-enter correct EEPROM data
2. Change a new main board
The inter-chip
communication failure
on the main control
board
EE28 Main board failure
1. Stop electricity supply and restart it
2. Change a new main board
Remarks:
1. In heating mode, if the water out temperature is higher than the set temperature over 7degree,
the LED controller displays EE04 for water over-heating protection.
1. In cooling mode, if the water out temperature is lower than the set temperature over 7 degree, the
LED controller displays PP11 for water over-cooling protection.
EE04 Water Overheating Protection
PP11 Water Overcooling Protection