C A M B R I D G E T P 5 0 0
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Sensor-Related Messages
Memory Failure - Checksum Error* – MO22
At Power-Up, the system has failed the Program Checksum
Test. This indicates a problem with the firmware (operation
program) and requires a service call.
Memory Warning - Persistent Memory Reset* – MO21
Appears after any system setup change. Contact your dealer or
service organization if this message appears on more than
one power-up, or if it appears after the system has been run-
ning normally for a period of time.
* This message can be reset from the topside panel with any
button press.
Memory Failure - Clock Error* – MO20 - Not Applicable on
the BP1500
Contact your dealer or service organization.
Configuration Error – Spa will not Start Up
Contact your dealer or service organization.
A Pump Appears to be Stuck ON – MO34
Water may be overheated. POWER DOWN THE SPA. DO NOT
ENTER THE WATER. Contact your dealer or service organization.
A Pump Appears to have been Stuck ON when spa was last
powered - MO35
POWER DOWN THE SPA. DO NOT ENTER THE WATER.
Contact your dealer or service organization.
The water level is too low
Some systems have a water level detect, and this mes-
sage appears if it detects that the water level is too low.
* This message can be reset from the topside panel with any
button press.
Reminder Messages
General maintenance helps.
The display of Reminder Messages can be suppressed by
using the PREF Menu.
Reminder Messages can be chosen individually by the Man-
ufacturer. They may be disabled entirely, or there may be a
limited number of reminders on a specific model.
The frequency of each reminder (e.g. 7 days) can be specified
by the Manufacturer.
Press a Temperature button to reset a displayed reminder
message.
Alternates with temperature or
normal display.
Appears on a regular schedule, e.g. every 7 days.
Check pH with a test kit and adjust pH with the appropri-
ate chemicals.
Alternates with temperature or
normal display.
Appears on a regular schedule, e.g. every 7 days.
Check sanitizer level and other water chemistry with a
test kit and adjust with the appropriate chemicals.
Alternates with temperature or
normal display.
Appears on a regular schedule, e.g. every 30 days.
Clean the filter media as instructed by the manufacturer.
See HOLD on page 9.
Appears on a regular schedule, e.g. every 30 days.
Residual Current Device (RCD) is an important safety
device and must be tested on a regular basis to verify its
reliability.
Every user should be trained to safely test the RCD as-
sociated with the hot tub installation. An RCD will have a
TEST and RESET button on it that allows a user to verify
proper function.
Warning:
If freezing conditions exist, a RCD should be reset
immediately or spa damage could result.
The end user should always trained to test and reset the
RCD on a regular basis.
