Mitsubishi Electric Mr.Slim PUHZ-SHW80VHA Service Manual page 94

3. How to start "Judgment of refrigerant leakage " mode.
To know the current condition of refrigerant amount, same operation must be performed.
Please repeat the same procedure
Press CLOCK button and select the [GAS LEAK JUDGE]
Refrigerant leakage
detection
(initial teaching)
GAS LEAK
TEST START
Press ( ) button to confirm. (Display
FILTER
Display
Waiting for response
Display[C] indication
" 0 "
" 20 "
" 8888 "
<Note>
% for judgment can be changed by "Unit function setting of remote controller".
Selectable either 80%(initial setting) or 60%
Refer to 12-1 Mode No.21.
(When the "%" for judgment is changed, please start "Initial learning
Then, please start "Judgment of refrigerant leakage" mode( ~ ).
<How to reset the initial condition (data) >
When the unit is removed and installed again or refrigerant is charged additionally, the "Initial learning" must be
performed again by following procedure.
(1)Turn "Main Power" OFF.
(2)Connect the pin of CN31 to ON position on the outdoor controller board.
(3)Turn SW4-1 on the outdoor controller board to ON.
(4)Turn "Main Power" ON to reset the initial data.
After reset the data, please turn pin of CN31 and SW4-1 to original(OFF) position.
<Caution>
1.On the following condition, the operation cannot be stabillized and judgment of cheking operation may not be accurate.
(a)Outdoor temperature
(b)Air flow setting is not "High-notch".
2.Please check the operation and unit status, when the operation is not stabilized after more than 45 minutes.
OCH526
~ as when "Initial learning operation" for "Checking operation".
Refrigerant leakage
detection judgment
GAS LEAK
JUDGE
LOADING)
Flashing "
Loading
Judgment
Meaning (% setting)
Refrigerant leakage is less than 20% of initial condition.
Refrigerant leakage is more than 20% of initial condition.
"Error"=No initial data is available.
40 or Room temperature
0"
~ " about 1 minute ( ) and cancel
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