Enertech WD240, Installation & Operation Manual, Page: 27 / 32

27
IOM, WD Models Enertech Global
Superheat Subcooling Condition
Normal Normal Normal operation
Normal High Overcharged
High Low Undercharged
High High Restriction or TXV is stuck almost closed
Low Low TXV is stuck open
Heating - Without Desuperheater
EWT GPM
Per Ton
Discharge
Pressure
(PSIG)
Suction
Pressure
(PSIG)
Sub
Cooling
Super
Heat
Air
Temperature
Rise (°F-DB)
Water
Temperature
Drop (°F)
30
1.5
3
285-310
290-315 68-76
70-80 4-10
4-10 8-12
8-12 14-20
16-22 5-8
3-6
50
1.5
3
315-345
320-350 100-110
105-115 6-12
6-12 9-14
9-14 22-28
24-30 7-10
5-8
70
1.5
3
355-395
360-390 135-145
140-150 7-12
7-12 10-15
10-15 30-36
32-38 9-12
7-10
Cooling - Without Desuperheater
EWT GPM
Per Ton
Discharge
Pressure
(PSIG)
Suction
Pressure
(PSIG)
Sub
Cooling
Super
Heat
Air
Temperature
Drop (°F-DB)
Water
Temperature
Rise (°F)
50
1.5
3
220-235
190-210 120-130
120-130 10-16
10-16 12-20
12-20 20-26
20-26 19-23
9-12
70
1.5
3
280-300
250-270 125-135
125-135 8-14
8-14 10-16
10-16 19-24
19-24 18-22
9-12
Superheat/Subcooling Conditions
Typical R-410A Unit Superheat/Subcooling Values
Section 10: Troubleshooting
Refrigeration Troubleshooting
System Faults Mode
Discharge
Pressure
Suction
Pressure
Superheat Subcooling Air TD Water TD
Compressor
Amps
Under Charge
Heat Low Low High Low Low Low Low
Cool Low Low High Low Low Low Low
Over Charge
Heat High High/Normal Normal High High Normal High
Cool High High/Normal Normal High Normal High High
Low Air Flow
Heat High High/Normal Normal High/Normal High Low High
Cool Low Low/Normal Low Normal High Low High/Normal
Low Source
Water Flow
Heat Low Low/Normal Low Normal High Low High/Normal
Cool High High/Normal Normal High/Normal High Low High
Low Load
Water Flow
Heat High High/Normal Normal High/Normal High Low High
Cool Low Low/Normal Low Normal High Low High/Normal
Restricted TXV
Heat High Low High High Low Low Low
Cool High Low High High Low Low Low
TXV Stuck Open
Heat Low High/Normal Low Low Low Low High
Cool Low High/Normal Low Low Low Low High
Inadequate
Compression
Heat Low High High/Normal Low/Normal Low Low Low
Cool Low High High/Normal Low/Normal Low Low Low