Heating Mechanical Checks Flow Chart - Heat Controller HRE1318/1360-1A Installation And Operation Manual

16.3 HEATING MECHANICAL CHECKS FLOW CHART

High Head Pressure
Inoperative Indoor Blower
Wrong Indoor Blower Rotation
22
Dirty Filters
Dirty Indoor Coil
Overcharge
Inadequate Indoor
Air Flow
Non-condensibles
Broken Indoor
Blower Belt
Inadequate Ducts
Unit Running?
YES
Pressure problems?
Low Head Pressure
Low on Charge
Low Indoor Temperature
Open IPR Valve
Closed Indoor
Check Valve
Inoperative Compressor
Valves
Restricted Outdoor
Metering Device
Restricted
Filter Drier
Reversing Valve
Failure
NO
Go to Electrical
Checks Flow Chart
Low Suction Pressure
Dirty Outdoor Coil
Inadequate Air Flow
Over Outdoor Coil
Inoperative OD Fan
(Check Defrost Control)
Low On Charge
Restricted Outdoor
Metering Device
Restriction in System
Closed Indoor Check Valve
Recirculation of Outdoor Air
Restricted
Filter Drier