Friedrich VRP12K, Service And Parts Manual

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4 PB
TABLE OF CONTENTS
Electronic Expansion Valve (EEV)‑ 121
Reversing Valve Description And Operation‑ 122
Testing The Reversing Valve Solenoid Coil‑ 123
Checking The Reversing Valve‑ 124
Touch Test Chart : To Service Reversing Valves‑ 125
Compressor checks‑ 126
Check the Outdoor Fan 12k/24k‑ 127
Check the Outdoor Fan 36k‑ 128
Replace the Outdoor Fan 12k/24k‑ 129
Replace the Outdoor Fan Motor36k‑ 130
Check the Indoor Fan 12k/24k‑ 131
Check the Indoor Fan 36k‑ 132
Replace the Indoor Fan 12k/24k‑ 133
Replace the Indoor Fan 36k‑ 134
Check the Heating Elements‑ 135
Replace the Heating Elements‑ 136
Mcs Motor Control System Board Pin out‑ 137
Mcs Motor Control System Board Replacement‑ 138
Fmc Board Pin Out‑ 139
FMC Board Replacement‑ 140
Heater Board Pin Out‑ 141
Heater Board Replacement‑ 142
Thermistor Locations‑ 143
T8 (Return Air Sensor)‑ 143
T1 (Evaporator Coil In Sensor)‑ 144
T5 (Evaporator Coil Out Sensor)‑ 144
T9 (Discharge Air Sensor)‑ 145
T2 (Liquid Heat)‑ 146
T6 (Liquid Cool)‑ 146
T10 (Outdoor Ambient Air Sensor)‑ 147
T7 (Cond. Coil Sensor)‑ 148
T4 (Comp. Discharge).‑ 149
T3 (Comp. Suction).‑ 150
Thermistor Values‑ 151
Thermistor Part numbers‑ 152
Check High and Low Pressure Limit Switches‑ 153
Replace High Pressure Limit Switch‑ 154
TROUBLESHOOTING‑ 156
VRP Troubleshooting Map‑ 156
Required Tools‑ 157
Required Skills‑ 158
Troubleshooting by Rule Out Methodology‑ 158
Troubleshooting Flowchart‑ 159
Wall Controller Not “Smart”‑ 160
Verify Wall Controller Firmware‑ 161
Verify FMC Firmware‑ 162
Verify MCS Firmware‑ 163
Check For Power‑ 164
Diagnostic Code Check‑ 165
Diagnostic Code (Temperature Based)‑ 167
Diagnostic Codes (Voltage/ Amperage)‑ 168
Voltage/Amperage Related Diagnostics –Compressor Rule Out‑ 168