Daikin Enfinity VFC - Refrigeration Circuit Troubleshooting Guide

troubleshooting
Table 22: Occupied, Bypass Mode, Standby or Tenant Override Modes
Description* Type Yellow Green Red
Occupied,BypassMode,Standbyor
TenantOverrideModes
Mode OFF ON OFF
• Unit is operating normal. It may currently have a control signal or ready to operate when a control signal is active.
Troubleshooting Refrigeration Circuit
Figure 33: Troubleshooting Refrigeration Circuit
Symptom Head Pressure
Suction
Pressure
Compressor
Amp Draw
Super Heat Subcooling
Air Temp
Differential
Water
(loops)
Temp
Differential
Safety Lock Out
Charge
UnderchargeSystem
(PossibleLeak)
Low Low Low High Low Low Low LowPressure
OverchargeSystem High High High Normal High
Normal
Normal HighPressure
Low
LowAirFlowHeating High High High
High
Low High Low HighPressure
Normal
LowAirFlowCooling Low Low Low
Low
High High Low LowTemp
Normal
LowWaterFlowHeating
Low Low
Low Low High Low High LowTemp
Normal Normal
LowWaterFlowCooling High High High High Low Low High HighPressure
HighAirFlowHeating Low Low Low Low High Low Low LowTemp
HighAirFlowCooling Low High Normal High Low Low Normal HighPressure
HighWaterFlowHeating Normal Low Normal High Normal Normal Low HighPressure
HighWaterFlowCooling Low Low Low Low High Normal Low LowTemp
TXVRestricted High Low
Normal
High High Low Low
Low
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