Service manual

Overview of the cooling mode functions ESIE03–01

2–28 Part 2 – Functional Description

2.2 Dry Keep Mode

Applicable units All units

Purpose The purpose of the dry keep mode is to remove humidity while maintaining the room temperature.

Method The points of thermostat ON or OFF are determined according to the suction air temperature at

start-up of the unit operation. The set temperature and flow rate are not displayed on the remote

controller.

Thermostat When dry keep is selected on the remote controller, the unit detects the ambient temperature. This

ambient temperature is then the setpoint. The thermostat is turned OFF when the air return

temperature drops below this setpoint. The thermostat is turned ON in one of the following conditions:

Operation condition The table below describes the operation condition.

Used input The dry keep function uses the following inputs:

Operation start-up

(Differential)

Suction air temp.

Thermostat

OFF

∆Tr

Suction air temperature Thermostat ON ∆Tr

Tr ≥ 24°C Tr 1.5°C

18°C ≤ Tr < 24°C Tr 1.0°C

Tr < 18°C 18°C

Compressor condition ON OFF

Fan speed L OFF

Flap angle Set angle PoO

Air flow direction set with

remote controller

Setting indication

Input

Connection on

indoor PCB

Connection on

outdoor PCB

indoor air temperature R1T X19A —