Panasonic CU-YL28HBE5 Service Manual page 41

10.1.10. Cool Only
• Setting of Cooling only model
Can the equipment set to cooling only model by setting JP
line on outdoor unit display circuit board?
[Setting method]
When the equipment is not power ON, cut off JP1 (COOL
ONLY) as shown in Figure 1.
After cut off the wire, switch ON the equipment power.
By setting to cooling only model, Heating operation is disabled.
(Wired remote controller cannot show heating display,
Wireless remote controller cannot accept heating operation.)
Besides ODOUR WASH operation is disabled. (Odor cut
operation is still enabled.)
When want to return cooling only setting model to heat pump
model, switch OFF the equipment power, connect JP1 (COOL
ONLY) back to short circuit condition and switch ON the
equipment power.
10.1.11. Precautions With Regard To Test Operation
CAUTION
• Always be sure to use a properly-insulated tool to operate
the switch on the circuit board.
(Do not use your finger or a metallic object.)
• Never turn on the power supply until all installation work has
been completed.
• Turn on the circuit-breaker 12 hours or more before a test
run. (By supplying power to crankcase heater, compressor is
warmed and liquid compressing is prevented.)
• Check that the voltage is 90% of rated voltage or higher
when starting the unit.
(The unit will not operate if the voltage is less than 90% of
rated voltage.)
• Test operation can be carried out using the remote control
unit or by using the switch on the printed circuit board inside
the outdoor unit.
If carrying out test operation at the printed circuit board of
the outdoor unit, follow the procedure given below. (If using
the remote control unit to carry out test operation, refer to
the installation manual which is supplied with the indoor
unit.)
• Press the COOLING TEST or HEATING TEST switch for 1
second or more.
(Be sure to select cooling mode first, and run the units in this
mode for 7 minutes or more.)
• Press the TEST button once more to cancel test operation
mode.
• When performing heating test operation when the outside
temperature is high, or cooling test operation when the
outside temperature is low, the protection circuits may some-
times operate within a few minutes.
NOTE 1 These units are equipped with connection error prevention circuits. If the units do not operate, it is possible that the connection
error prevention circuits have been operated. In such cases, check that the Indoor/outdoor unit connection wire (connected to
terminals
Normal operation should then commence.
, and ) is connected correctly. If they are connected incorrectly, connect them correctly.
The equipment can be set to cooling only model by setting
the JP line on the outdoor unit display circuit board.
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