Specifications

Manual 2100-317 Page 29
Heat Gen.
Power Failure Blown Fuse or Tripped Breaker Faulty Wiring Loose Terminals Low Voltage Defective Contacts in Contactor Compressor Overload Potential Relay Run Capacitor Start Capacitor Faulty Wiring Loose Terminals Control Transformer Low Voltage Thermostat Contactor Coil Pressure Controls (High or Low) Indoor Blower Relay Discharge Line Hitting Inside of Shell Bearings Defective Seized Valve Defective Motor Wingings Defective Refrigerant Charge Low Refrigerant Overcharge High Head Pressure Low Head Pressure High Suction Pressure Low Suction Pressure Non-Condensables Unequalized Pressures Solenoid Valve Stuck Closed (Htg) Solenoid Valve Stuck Closed (Clg) Solenoid Valve Stuck Open (Htg or Clg) Leaking Defective Valve or Coil Plugged or Restricted Metering Device (Htg) Scaled or Plugged Coil (Htg) Scaled or Plugged Coil (CLg) Water Volume Low (Htg) Water Volume Low (Clg) Low Water Temperature (Htg) Plugged or Restricted Metering Device (Clg) Fins Dirty or Plugged Motor Winding Defective Air Volume Low Air Filters Dirty Undersized or Restricted Ductwork Auxillary Heat Upstream of Coil
Compressor Will Not Run
No Power at Contactor
ÅÅÅÅ
ËË
ÅÅÅ
ËË
ÅÅ
Compressor Will Not Run
Power at Contactor
ÅÅÅ ÅÅÅÅ
Ë
ÅÅ Å
Compressor "Hums"
But Will Not Start
ÅÅÅ
Ë
ÅÅÅ ÅÅ Å Å
Compressor Cycles on Overload
ÅÅÅ
Ë
ÅÅÅÅ
ËËË
ÅÅ
ËË
Å
ËËËËËËËË
Å
Ë
Thermostat Check Light
Lite-Lockout Relay
Å
Compressor Off on High
Pressure Control
Ë
ÅÅÅÅ
ËË
Å
Ë
ÅÅÅÅÅ Å
Compressor Off on Low
Pressure Control
Ë
ÅÅÅÅ
Ë
Å
Ë
Å
Compressor Noisy
ËË
Å
Head Pressure Too High
ÅÅÅ
ËË
ÅÅ
ËËË
ÅÅ
Ë
Å
Head Pressure Too Low
ÅÅ Å
ËË
ÅÅÅ
Suction Pressure Too High
ÅÅÅ
Ë
Suction Pressure Too Low
Å
Ë
Å
Ë
ÅÅ
ËË
Å
Ë
ÅÅ
Ë
I.D. Blower Will Not Start
ÅÅÅÅ ÅÅÅ
ËË
Å
I.D. Coil Frosting or Icing
ÅÅ
Ë
ÅÅÅÅ
Ë
High Compressor Amps
ÅÅ ÅÅ
Ë
ÅÅÅÅ
Ë
ÅÅ
Ë
ÅÅÅÅ
ËË
Excessive Water Usage
Å
ËË
Compressor Runs Continuously
– No Cooling
ÅÅ Å
ËËË
ÅÅÅÅ
Ë
Liquid Refrigerant Flooding Back
To Compressor
ÅÅ ÅÅÅÅ
Ë
Compressor Runs Continuously
– No Heating
ÅÅ Å Å
ËË
ÅÅ
Ë
Reversing Valve Does Not Shift
ÅÅ
ËË
Å
Liquid Refrigerant Flooding Back
To Compressor
ÅÅ Å
ËË
ÅÅÅ
Aux. Heat on I.D. Blower Off
ÅÅ ÅÅ
Ë
Å Å
Excessive Operation Costs
ËË Ë
ÅÅ
ËË
ÅÅ
ËËË ËËË
Ice in Water Coil
ËË
ÅÅÅ
Ë
Å
Heating Cycle
AUX.
Cooling
Cycle
Heating or Cooling Cycles
Indoor Blower Motor
and Coil
INDOOR SECTIONPOWER SUPPLY
Water
Solenoid
Rev.
Valve Water Coil
WATER COIL SECTION
Line Voltage Control Circuit Compressor Refrigerant System

Ð
Denotes common cause
Denotes occasional cause
QUICK REFERANCE TROUBLESHOOTING CHART FOR WATER TO AIR HEAT PUMP