Owner`s manual
www.imperialspaparts.com
www.imperialspaparts.com
Error Messages
The control system is a self-diagnostic system. The system will automatically display the error
messages in the topside control window, if a problem is detected.
HtS High Temp Sensor:
The control system checks the heating components and temperature sensor for errors. If a tem-
perature sensor is open or an error is detected, the topside control will display the code HtS -
current water temp - HtS. The heater will shut down. The automatic reset will occur after the
open sensor condition is fixed. If the temperature sensor is closed and an error is detected, the
topside control will display the code HtS - OHt - current water temp - HtS. The entire system
will be disabled and the spa will need to be manually reset after the shorted sensor condition is
fixed. This must be repaired by a service technician if the problem persists.
tS Temp Sensor:
The control system checks the water temperature sensor for errors. If a temperature sensor is
open and an error is detected, the topside control will display the code tS - 0 - tS. The heater will
shut down. The automatic reset will occur after the open sensor condition is fixed. If the tempera-
ture sensor is closed and an error is detected, the topside control will display the code tS - 255 -
Ht - OHt - tS. The entire system will be disabled and a manual reset will be required after the
shorted condition is fixed. This must be repaired by a service technician if the problem persists.
PS2:
The system checks for an open pressure/flow switch when the circulation pump is off. If an error
is detected, the topside control will display the code PS2 - current water temp - PS2. The
heater will shut down. An automatic reset will occur if this condition is fixed. Debris in the plumb-
ing may cause the pressure/flow switch to become closed and can cause this error. This must be
repaired by a service technician if the problem persists.
PS1:
The control system checks for a closed pressure/flow switch with the low speed pump or high
speed pump active. If an error is detected, the topside control will display PS1 - current water
temp - PS1. The heater will be deactivated. An automatic reset will occur if this condition is fixed
within 2 1/2 minutes. This error may be caused by a dirty filter. Remove and clean the filters
before calling for service. The manual reset is required if this condition has existed for more than
2 1/2 minutes. The filters may need to be cleaned. For manual reset, push the buttons
simultaneously or turn the main power off and then back on. This must be repaired by a service
technician if the problem persists.
dCP DC power:
The system checks for DC power at the relay (master control relay). Error code dCP is displayed
if an error is found. This message can appear after a power interruption or lightning storm. This
must be repaired by a service technician if the problem persist.