Carrier 38MBRC Series Service Manual page 13

38MBRC: Service Manual
Evaporator Coil Temperature Protection
T2
TEstop
TEdown
TEH2
Fig. 18 — Evaporator Coil Temperature Protection
Off: Compressor stops
Decrease: Decrease the running frequency to the lower level
Hold: Keep the current frequency
Resume: No limitation for frequency
Auto Mode
This mode can be chosen with remote controller and the setting
temperature can be changed between 62.6~86°F(17~30°C).
In AUTO mode, the machine either selects COOLING, HEATING or
FAN-Only mode according to DT (DT=T1-Ts).
ΔT=T1-Ts
ΔT≥2F(1 ℃ )
-2°F(-1 ℃ )<ΔT<3(2°F1 ℃ )
ΔT≤-1 ℃ (-2°F)
The indoor fan runs in the AUTO Fan mode of the relevant mode. The
louver operates same as in relevant mode. If the machine switches mode
between heating and cooling, the compressor will continue to stop for 15
minutes and then choose a mode according to T1-Ts. If the setting
temperature is modified, the machine selects a running function once
again.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Off
Decrease
Hold
Resume
Running Mode
Cooling Mode
Fan-only Mode
Heating Mode
DRYING Mode
DRYING mode works the same as COOLING mode in BREEZE
speed. All protections are active and the same as that in the COOLING
mode.
Auto-Restart Function
The indoor unit is equipped with an auto-restart function, which is carried
out through an auto-restart module. In case of a sudden power failure, the
module memorizes the setting conditions before the power failure. The
unit resumes the previous operation setting (not including sleep function)
automatically after 3 minutes when power returns.
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