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SINCLAIR
Troubleshooting:
2.2 E3 Refrigerant-lacking Protection
Error code:
Applicable model: HOTWATER; SAVE; PRESET; NIGHT
Error judgment condition and method: E3 is displayed on the wired controller. The troubleshooting
method is shown in the flowchart below.
Possible cause: (1) Refrigerant leakage of the unit; (3) Insufficient refrigerant of the unit
AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
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