Troubleshooting Refrigeration Circuit - Daikin ARQ Installation Manual

Table 15: Troubleshooting Refrigeration Circuit
Symptom
Charge
Undercharge System
(Possible Leak)
Overcharge System
Low Air Flow Heating
Low Air Flow Cooling
Low Water Flow Heating
Low Water Flow Cooling
High Air Flow Heating
High Air Flow Cooling
High Water Flow Heating
High Water Flow Cooling
TXV Restricted
Daikin Training and Development
Now that you have made an investment in modern, efficient Daikin equipment, its care should be a high
priority. For training information on all Daikin HVAC products, please visit us at
www.DaikinApplied.com and click on training, or call 540-248-9646 and ask for the Training Department.
Warranty
All Daikin equipment is sold pursuant to its standard terms and conditions of sale, including Limited
Product Warranty. Consult your local Daikin Representative for warranty details. Refer to Form 933-
430285Y. To find your local Daikin Representative, go to www.DaikinApplied.com.
Aftermarket Services
To find your local parts office, visit www.DaikinApplied.com or call 800-37PARTS (800-377-2787). To find
your local service office, visit www.DaikinAPcom or call 800-432-1342.
This document contains the most current product information as of this printing. For the most up-to-date
product information, please go to www.DaikinApplied.com.
Products manufactured in an ISO Certified Facility.
© 2013 Daikin Applied • www.DaikinApplied.com • (800) 432–1342
Head Suction Compressor
Pressure Pressure Amp Draw
Low Low
High High
High High
Low Low
Low Low
Normal Normal
High High
Low Low
Low High Normal
Normal Low Normal
Low Low
Normal
High Low
Super
Subcooling
Heat
Low High Low
High Normal High
High
High Low
Normal
Low
Low High
Normal
Low Low High
High High Low
Low Low High
High Low
High Normal
Low Low High
High High
Low
Air Water
Temp (loops) Temp
Differential Differential
Low Low
Normal
Normal
Low
High Low
High Low
Low High
Low High
Low Low
Low Normal
Normal Low
Normal Low
Low Low
Safety
Lock
Out
Low Temp
High Pressure
High Pressure
Low Temp
Low Temp
High Pressure
Low Temp
High Pressure
High Pressure
Low Temp
Low Temp
IM 1083 (10/13)