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4.Thermostat characteristic during cooling mode and heating mode operation.
The thermostat on/off characteristic in both operation modes are given in the table below.
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26.9. Indoor unit fan control
1. Fixing at LO, MED or HI
When LO, MED or HI is set, the relay switches and operation is carried out at that setting.
2. Automatic fan speed
When set to AUTO, the indoor unit fan operation changes as shown in the table below.
26.10. Forced operation during restart
The compressor will not stop operating for 3 minutes after cooling mode or heating mode operation starts, even if the indoor unit
thermostat turns off. (However, the compressor will stop operating during this time if the indoor unit air intake temperature exceeds
33°C during heating mode operation or if the indoor unit air intake temperature drops below 16°C during cooling mode operation.)
thermostat turns off. (However, the compressor will stop operating during this time if the indoor unit air intake temperature exceeds
33°C during heating mode operation or if the indoor unit air intake temperature drops below 16°C during cooling mode operation.)
26.11. Outdoor unit fan excess heat dissipation control
1. Start
Carried out when the compressor switches from on to off (when the remote control unit is used to stop operation)
2. Operation
The outdoor unit fan runs at SUPER HI speed for approximately 60 seconds and then stops.
26.12. Discharge temperature control
1. Operation
When the discharge temperature sensor detects a temperature of 100°C or higher during cooling mode operation, the liquid
bypass valve is turned on.
bypass valve is turned on.
2. Cancelling
When the discharge temperature sensor detects a temperature of 70°C or lower, the liquid bypass valve is turned off.
26.13. Emergency operation
When the emergency operation switch (DSW1) on the outdoor unit printed circuit board is set to the emergency setting, then
emergency operation is enabled. This allows normal operation to continue, with all abnormalities other than a discharge
temperature abnormality, high pressure abnormality or overcurrent abnormality being ignored.
emergency operation is enabled. This allows normal operation to continue, with all abnormalities other than a discharge
temperature abnormality, high pressure abnormality or overcurrent abnormality being ignored.
26.14. DIP switch settings
•
Indoor unit printed circuit board (DSW1)
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