My PS-500 displays the message Pressure or Temp Error. What should I do?

• Make sure the Pulsense device is worn snugly around your wrist to collect more accurate heart rate data. This may cause a slight impression on the wrist. Adjust the band for the comfort and performance you choose. Make sure the Pulsense device does not touch your ulna bone. Warm your wrist or fingertips if they are cold.