Heat Controller HTV Series Installation, Operation & Maintenance Instructions Manual page 47

Heat Controller, Inc.
Functional Troubleshooting
Fault
Condensate Fault -
Code 6
Over/Under Voltage -
Code 7
(Auto Resetting)
Unit Performance
Sentinel - Code 8
No Fault Code Shown
Unit Short Cycles
Only Fan Runs
Only Compressor Runs
HTV/HTD/HTH SERIES
FUNCTIONAL TROUBLESHOOTING
Htg Clg Possible Cause
X X Blocked Drain
X X Improper Trap
X Poor Drainage
X Moisture on Sensor
X X Under Voltage
X X
X Heating Mode FP2>125°F
X Cooling Mode FP1>125°F or FP2<40°F
X X No Compressor Operation
X X Compressor Overload
X X Control Board
X X Dirty Air Filter
X X Unit in "Test Mode"
X X Unit Selection
X X Compressor Overload
X X Thermostat Position
X X Unit Locked Out
X X Compressor Overload
X X Thermostat Wiring
X X Thermostat Wiring
X X Fan Motor Relay
X X Fan Motor
X X Thermostat Wiring
Check for blockage and clean drain
Check trap dimensions and location
Check for piping slope away from unit
Poor venting. Check vent location
Check for moisture shorting to air coil
Check power supply and 24VAC voltage before
operation
Check power supply wire size
Check compressor starting. Need hard start kit
Check 24 VAC and unit transformer tap for correct
supply voltage
Check power supply voltage and 24 VAC before
operation
Check 24 VAC and unit transformer tap for correct
supply voltage
Check for poor air flow or overcharged unit
Check for poor water flow, or air flow
See "only fan operates"
Check and replace if necessary
Reset power and check operation
Check and clean air filter
Reset power or wait 20 minutes for auto exit
Unit may be oversized for space. Check sizing load
of space
Check and replace if necessary
Insure thermostat set for heating or cooling
Check for lockout codes. Reset power
Check compressor overload. Replace if necessary
Check thermostat wiring at heat pump. Jumper for
compressor operation in test mode
Check G wiring at heat pump. Jumper G and R
operation
Jumper G and R for fan operation. Check for across
BR contacts
Check fan power enable relay operation (if possible)
Check for line voltage at motor. Check capacity
Check thermostat wiring at heat pump. Jumper
compressor operation in test mode.
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Solution