V1 JUIN 2010 ALTECH Generation ALL IN ONE Type Heat Pump Water Heater Technical Manual
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2.4.3 Water-heating Operation
2.4.4 Defrosting during Water-heating
Conditions to activate defrosting cycle
When T3 ≤0℃, Comp. is continually running for 40min
(If Comp. restart frequently, which can only run within 10 min. for each start cycle, system will count
accumulated running time, when accumulated running time reaches 40min, defrosting cycle will activate 2
min. after Compressor’s next start
Conditions to inactivate defrosting cycle (when achieve any one of following conditions)
1. Defrosting time reaches 10 min;
2. T3≥15℃;
Main components’ movement when defrosting
EEV stay 480P opening degree when defrosting, 4min after defrosting EEV start regulating
2.4.5 Ambient Temperature
a) The system’s operation temperature is within -30~43℃ and below are the operation temperature for
each mode.
b) Economy Mode: -7~43℃
c) Hybrid Mode: -30~43℃
d) E-heater Mode: -30~43℃
2.4.6 Self-Protection Detection
a) When the self-protection happens, the system will be stopped and start self-check, and restart when
the protection resolved;
b) When the self-protection happens, the buzzer will buzz in every other minute, the Warning indicator
glitter and the display indicate the error code and water temperature alternatively. Press CANCEL
button for 3sec to stop the alarm. All stop when he protection is resolved and error code disappears on
the display.
c) In the following circumstances, self-protection starts:
Air inlet or outlet is obstacles;
The heat exchanger is covered with too much dust;
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