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14. Method to select a model with jumper cable
(1) The following functions are selectable with the jumper cables on the circuit-printed board.
(2) Jumper cable installation position
1 Model selection jumper cables J11, 12
3 Heating selection jumper cables J3
Jumper cable is set.:
Refrigerant heating is invalid.
Jumper cable is not set.:
Refrigerant heating is valid.
2 Refrigerant selection jumper cables J21, 22
4 FM
1
(evaporator) switch jumper cable J4
Jumper cable is set.:
FM
1
ON when thermo is off.
Jumper cable is not set.:
FM
1
OFF when thermo is off.
No.
1
2
3
4
Item
Model selection
Refrigerant selection
Heating selection
FM
1
switch
(evaporator fan)
Jumper cable No.
J11, 12
J21, 22
J3
J4
Description
H, M, L
R22, HFC-134a, R401B, R404A
Refrigerant heating: Valid/invalid
When compressor is off, evaporator FM
1
ON/OFF switch is at the
evaporator FM
1
ON as standard.
Applicable temperature
L -30 ~ 25°C
M -20 ~ 25°C
H -5 ~ 25°C
(M) -20 ~ 25°C
J11
Set.
Set.
Not set.
Not set.
J12
Set.
Not set.
Set.
Not set.
Remarks
—
—
—
Regarded as M selection
Refrigerant selection
R22
HFC-134a
R401B
R404A
HFC-134a
R401B
J21
Set.
Set.
Not set.
Not set.
J22
Set.
Not set.
Set.
Not set.
Remarks
—
—
—
Regarded as HFC-134a,
MP66 selection.