SERVICE MANUAL - BVT Partners OÜ

'11 • SCM-SM-110ModelItem Cooling HeatingLower limit speedSCM40, 45, 50 32 rps 32 rpsSCM60, 71, 80, 100, 125 25 rps 32 rps2)115(12) Current safeModel SCM40, 45, 50, 60, 71, 80(a) Purpose:(b) Detail of operation:(c) Current safe control value: Set this using the jumper wire (J1 or J2) on the outdoor PCB. Control startswhen it exceeds the control value.1) Switching with jumper wireJumper wire (J2)Short-circuit(At shipping from factory)Short-circuitShort-circuit (At shipping from factory) Current safe 1 Current safe 2Jumper wire (J1)Open Current safe 3 Current safe 32) Control valueUnit: ACurrent safe 1 Current safe 2 Current safe 3ModelCooling Heating Cooling Heating Cooling HeatingSCM40, 45ZJ-S, 50ZJ - S1 10.0 12.0 10.0 10.0 7.5 7.5SCM60ZJ - S1 11.0 14.0 10.0 10.0 7.5 7.5SCM71, 80ZJ - S1 13.0 16.0 10.0 10.0 7.5 7.5◆Model SCM100, 125Detecting the outdoor unit inverter input (primary) current and the output (secondary) current, if the current values exceed settingvalues, the compressor speed (frequency) is controlled to protect the inverter.Reduces frequencyat each minute.CoolingHeatingRetentionControl Reset value Control Reset valuevalue A B value A BResetBAPrimarycurrent21 20 23 20Current (A)side(Fig. C) The control value “A” and the reset value vary dependingon the compressor speed.Secandary24currentsideFig.C Fig.C Fig.C Fig.C2220Control valve A1816 Reset valve B141240 50 60 70 80 90 100 110 120 130Compressor speed (frequency) (rps)Control or reset valve (A)