Daikin BSVQ36MVJU, Service Manual

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SiUS30-604 Function General
Function 55
1. Function General
1.1 Symbol
Symbol Electric symbol Description or function
20S1 Y5S Four way valve (Main)
20S2 Y7S Four way valve (For heat exchanger)
DSH — Discharge pipe superheat
DSHi — Discharge pipe superheat of inverter compressor
EV (Y1E, Y3E) Opening of electronic expansion valve
EV1 Y1E Electronic expansion valve for water heat exchanger
EV3 Y3E Electronic expansion valve for sub-coolig heat exchanger
HTDi —
Value of INV compressor discharge pie temperature (R3T) compensated with outdoor air
temperature
Pc S1NPH Value detected by high pressure sensor
Pe S1NPL Value detected by low pressure sensor
SH — Evaporator outlet superheat
SHS — Target evaporator outlet superheat
SVG Y4S Solenoid valve for discharging gas from receiver
SVL Y3S Solenoid valve for gas charging to receiver
SVE Y2S Solenoid valve for oil collection from water heat exchanger
SVP Y1S Solenoid valve for hot gas bypass
SVSL Y6S Solenoid valve for non-operating unit liquid pipe closing
Tc — High pressure equivalent saturation temperature
TcS — Target temperature of Tc (Condensing temperature)
Te — Low pressure equivalent saturation temperature
TeS — Target temperature of Te (Evaporating temperature)
Tfin R1T Inverter fin temperature
Ts R2T Suction pipe temperature detected by R2T (Suction pipe)
Tsh R5T
Temperature detected by R5T-gas pipe temperature of sub-cooling heat exchanger gas
side (outlet temperature)
Tp — Calculated value of compressor port temperature
Tdi R3T
Discharge temperature detected by thermistor located the inverter compressor discharge
pipe
Tl R6T Liquid pipe temperature
Tg R4T The gas pipe temperature of water heat exchanger