Ecoer EAHAEC-36 - 7.3.4.4 Defrosting mode; 7.3.5 Auto Mode; 7.3.6 Dry Mode

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SDi Decades Extreme Service Manual www.ecoer.com
May. 2023Manufacturer reserves the right to change specifications or designs without notice.
• The unit enters defrosting mode according to the temperature value of T3 and T4 as well as the
compressor running time.
• In defrosting mode, the compressor continues to run, the indoor and outdoor motor will cease operation, the
defrost light of the indoor unit will turn on, and the “ ” symbol is displayed.
• If any one of the following conditions is satisfied, defrosting ends and the machine switches to normal
heating mode:
• T3 rises above TCDE1.
• T3 maintained above TCDE2 for 80 seconds.
• Unit runs for 15 minutes consecutively in defrosting mode.
• If T4 is lower than or equal to -8℉ and compressor running time is more than TIMING_DEFROST_TIME, if
any one of the following conditions is satisfied, defrosting ends and the machine switches to normal heating
mode:
• Unit runs for 10 minutes consecutively in defrosting mode.
• T3 rises above 50℉.
3.4.5 Evaporator Coil Temperature Protection
When the evaporator temperature exceeds a preset protection value, the compressor stops operation.
7.3.5 Auto Mode
• This mode can be selected with the remote controller and the temperature setting can be adjusted between
60℉~86℉.
• In auto mode, the u n i t selects cooling, heating, or
fan-only mode on the basis of ∆T (∆T =T1-TS).
∆T
Running mode
∆T>4℉
Cooling
-6℉<∆T≤4℉
Fan-only
∆T≤-6℉
Heating*
Heating*: In auto mode, cooling only models run the fan
• Indoor fan will run at auto fan speed.
• If the machine switches mode between heating and cooling, the compressor will keep stopping for
certain time and then choose mode according to ∆T.
7.3.4.4 Defrosting mode
Note: TCDE1, TCDE2 are the parameters of of EEPROM.
7.3.6 Dry Mode
• In drying mode, AC operates the same as auto fan in cooling mode.
• All protections are activated and operate the same as they do that in cooling mode.
• Low Room Temperature Protection
If the room temperature is lower than 50℉, the compressor ceases operations and does not resume until room
temperature exceeds 54℉.
7.3.4.3 Outdoor Fan Control:
• The outdoor unit will be run at different fan speed according to T4 and compressor frequency.
• For different outdoor units, the fan speeds are different.