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OPERATING INSTRUCTIONS
In order to prevent wrong operation, a special lock
function has been designed.
If there is no operation for 1 minute, the Unit will be
locked automatically, and display shows the Lock
indicator.
When the Unit is locked, no keys can be operated.
To unlock Unit, please proceed as follows:
The clock is for a 24-hour system and the initial time
is 00:00.
To make a better use of this Unit, it is recommended
to set the time for accurate local time.
Every time Unit is disconnected, the clock will be reset
to 00:00 and it will need to be adjusted again.
Unit has three operation modes: Economy Mode, Hybrid
Mode and E-heater Mode.
ECONOMY Mode: The Unit heats water only by
compressor drive according to heat-pump principle.
Used when the ambient temperature is high.
HYBRID Mode: The Unit heats water not only by
compressor drive but also by electric heater.
Used when the ambient temperature is low or a large
amount of hot water is needed.
E-HEATER Mode: The Unit heats water only by electric
heater.
Used when the ambient temperature is very low.
By default, the Unit operates in HYBRID Mode.
To change operation mode:
Temperature displayed is the water temperature in the
upper part of the tank.
Default is 65°C.
The Economy mode setting range is 38~65°C.
The Hybrid and E-heater mode setting mode setting
mode is 38~70°C.
In the following page, method for setting temperature
is shown.
Method for time set:
Fig. 7-3
Fig. 7-4
Fig. 7-5
LOCK/UNLOCK
•
Clock Set
•
Mode Selection
•
Temperature Set
•
CANCEL
At the locking status of Display, long
press the CANCEL key to remove it.
LOCK indicator will blank out and all
keys can be used normally.
Press CLOCK key: the minute
digits of the clock start flashing
slowly.
Press UP and DOWN key, you
can adjust minutes.
Press the UP and DOWN keys,
you can adjust the hour.
Press CLOCK key again or stop
operation for about 10 seconds,
flashing will stop and clock set
is successful.
Press the MODE key, operation mode will be
shifted among the three modes in a cycle,
meanwhile the corresponding indicator on
the display will light up. Select your desired
operation mode.
Press the CLOCK key again, the minute
digits stop flashing while the hour digits
starts.
CLOCK
CLOCK
MODE
Summary of Contents for HWMI 150 A
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