Hitachi RAS-3.0PNNBDH1 - Condenser High-Temperature Protection

5. CONTROL LOGIC DESCRIPTION
Condition1:
Cooling mode: When the outdoor coil temp. T3 keeps higher than T2 for 10 seconds, the
compressor and outdoor fan will shut off. When T3 is lower than T1, the compressor
and outdoor fan will restart up.
Condition2:
Heating mode: When the indoor coil temp. T3 keeps higher than T2
for 10 seconds, the
compressor and outdoor fan will shut off. When T3 is lower than T1, the compressor
and outdoor fan will restart up.
T3
TE10
Off
On
TE11
5.6 Condenser High-temperature Protection
DC-Inverter outdoor unit
AC will enter T3 protecti
on if any of the following conditions is satisfied.
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