Daikin WGZ030DW Operating And Maintenance Manual page 29

High Condenser Pressure - Unload
Event description (as shown on screen): CondPressHighUnloadN
Trigger:
This event is triggered if all of the following are true:
•
circuit state = Run
•
more than one compressor is running on the circuit
•
condenser pressure > High Condenser Pressure – Unload set point
Action Taken: Stage off one compressor on the circuit every 10 seconds, except the last one.
Reset: While still running, the event will be reset if condenser pressure drops below the "Hold Clear @"
value which is displayed on that circuit's VIEW CIRCUIT n (1) screen. The "Hold Clear @" is calculated
based on number of compressors, refrigerant, and number of High Condenser Pressure – Unload
occurrences since the circuit has cycled off or since midnight. See table below:
Condenser
Configuration
Water-Cooled
Air-Cooled
Failed Pumpdown
Event description (as shown on screen): Pumpdown Fail Cir N
Trigger: Circuit state = pumpdown for time > 60 seconds
Action Taken: Shutdown circuit
Reset: N/A
Condenser Freeze Event
Event description (as shown on screen): Cond Freeze Circ N
Trigger: Cond Sat Refr Temperatre < Condenser Freeze Set Point AND Condenser Pump State = OFF
Action Taken: Start condense pump.
Reset: N/A
Condenser Freeze Event (Water Cooled = Y Only)
Event description (as shown on screen): Cond Freeze Circ N
Trigger: Cond Sat Refr Temp < Condenser Freeze Set Point AND Condenser Pump State = OFF
Action Taken: Start condenser pump.
Reset: Cond Sat Refr Temp > Condenser Freeze Set Point plus 2°F.
Suction Temperature Sensor Fail
Event description (as shown on screen): SuctT Sensor Fail N
Trigger: Sensor shorted or open.
Action Taken: None.
Reset: N/A
Entering Evaporator Water Temperature Sensor Fail (TGZ unit only)
Event description (as shown on screen): Evap EWT Sensor Fail
Trigger: Sensor shorted or open.
Action Taken: None.
Reset: N/A
OMM 1130-2
Compressors R410A
4 40 psi
6 30 psi
4 100 psi
6 80 psi
R22 Step
R134a
R407C Increase
30 psi 30 psi 10 psi
N/A 20 psi 10 psi
70 psi N/A 15 psi
N/A N/A 15psi
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