38
Error Messages
The following error messages are displayed in Pool, Spa, and Remote modes. Consecutive identical faults are only
stored once in the Fault History.
Error Message Description
Troubleshooting
Amb Sensor Fail Ambient temperature sensor is OPEN or
SHORTED.
Replace Amb Temperature sensor.
Coil Sensor Fail
Coil temperature sensor is OPEN or SHORTED. Replace Coil Temperature sensor.
H2O Sensor Fail Water temperature sensor is OPEN or
SHORTED.
Replace Water Temperature sensor.
Aux Sensor Fail
AUX temperature sensor is OPEN or SHORTED
(if equipped).
Replace AUX Temperature sensor.
Hi Press Trip
High pressure switch is preventing compressor
from operating.
Check High Pressure switch operation – replace as necessary.
Lo Press Trip
Low pressure switch is preventing compressor
from operating.
Check Low Pressure switch operation – replace as necessary.
Hi Press Lockout High pressure switch has tripped 7 times in a
single thermostat demand cycle.
The compressor is locked out of operation for 4 hours with an
auto reset. However, this lockout time can be reset by pressing
the MENU button or cycling the power.
Check refrigerant charge and adjust as necessary.
Check for low water flow.
Lo Press
Lockout
Lo pressure switch has tripped 6 times in a
single thermostat demand cycle.
The compressor is locked out of operation for 4 hours with an
auto reset. However, this lockout time can be reset by pressing
the MENU button or cycling the power.
Check refrigerant charge and adjust as necessary.
Brownout
Compressor not operating due to low 24VAC
power supply.
Voltage must be greater than 17VAC for 4+ seconds before
compressor operation is enabled. Check supply power to unit and
check 24VAC from transformer. Replace/correct as necessary.
Hi Water Temp
Water temperature sensor reads at or above
108°F (42°C). Compressor is prevented from
operating.
Temperature measured on water sensor must be below 103F
AND the UP button MUST be pressed to reset this alarm.
Remote Error
Both Spa and Pool inputs energized.
Check wiring of remote to the terminal blocks.
Water PS Open
Water flow or water pressure switch is open.
Check water flow.
Check settings for Pump Operation.
Outside Lockout The ambient temperature is lower than the
programmed temperature for lockout.
Check Amb sensor – might be OPEN or SHORTED.
Change Outside Lockout setting on control – change temp setting
or set to OFF to disable Outside Lockout.
Wait until ambient temperature rises above setpoint established in
installer/service mode.
Control Fault 1
Compressor relay failure.
Auto reset in 1 hour or Recycle control – replace control if fault
continues.
Control Fault 2
ROM CRC Failure.
Auto reset in 1 hour or Recycle control – replace control if fault
continues.
Control Fault 3
RAM Failure
Auto reset in 1 hour or Recycle control – replace control if fault
continues.
Control Fault 4
Software Execution Out of Sequence
Auto reset in 1 hour or Recycle control – replace control if fault
continues.
Control Fault 5
Analog to Digital Converter Failure
Auto reset in 1 hour or Recycle control – replace control if fault
continues.
Control Fault 6
Analog to Digital Multiplexer Failure
Auto reset in 1 hour or Recycle control – replace control if fault
continues.
Control Fault 7
Interrupt Error.
Auto reset in 1 hour or Recycle control – replace control if fault
continues.
Control Fault 8
Time of Day Clock Failure.
If the control is unable to read the time of day clock, it logs the
fault and disables scheduled pump and aux output settings. Time
is displayed as ??:?? in this condition. Recycle control – replace
control if fault continues.
Table I. Error Messages
Summary of Contents for Raypak 2450
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