Toshiba Estia RUA-CP1701H, Service Manual

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Monobloc Outdoor Unit Service Manual
65
8.4.5. Superheat Control
The superheat is measured with SH=TS - T(Ps) (TS: suction temperature with temperature sensor and
T(Ps): suction saturation temperature calculated from pressure sensor) and it is controlled by PMV opening.
8.4.5.1. Superheat of 17kW unit
Superheat target on 17kW (SH
target
= SH
0 + α)
Compressor frequency
SH0
f< 15 15< f< 38.4 38.4< f< 61.8 61.8< f< 85.2 85.2< f
Cooling mode
6 6 6 6 6
Heating mode
4 4 4 4 4
8.4.5.2. Superheat of 21kW unit
Superheat target on 21kW (SH
target
= SH
0 + α)
Compressor frequency
SH0 f< 42 42< f< 60 60< f< 78 78< f< 96 96< f
Cooling mode
6 6 6 6 6
Heating mode
4 4 4 4 4