37
7.3
Error messages
Display
red LED
Buzzer
Error relay
Resetting
Error 1
Cover open
Error message is displayed
until the water tank carriage
(PH28) or the side cover
(PH28A) is inserted correctly
and locked.
flashes
–––
activated
Automatic resetting as
soon as the water tank
carriage (PH28) or the
side cover (PH28A) is
inserted correctly and
locked.
Cause:
Water tank carriage (PH28) or side cover (PH28A) not inserted and locked.
Action/Remedy: Correctly insert water tank carriage (PH28) or side cover (PH28A) and lock it.
Error 2
Max Niveau
Error message is displayed
until reset.
flashes
buzzes loudly
(can not be
switched off)
activated
Switch unit off, then on
again.
Cause:
Maximum water level in the base tub exceeded. Safety switch has triggered.
PH28: water tank not tight (tank cap not tight and/or level regulating valve in the tank cap
blocked or defective).
PH28A: inlet valve defective.
Action/Remedy: PH28: Remove the tank immediately. Check/clean filler neck, tank cap and level regulating
valve in tank cap (replace tank cap if necessary), then close tank cap correctly.
PH28A: check/replace inlet valve.
Error 3
Filltime
Error message is displayed
until reset.
flashes
buzzes
activated
Switch unit off, then on
again.
Note:
This message is displayed only on the Defensor PH28A
Cause:
Shut-off valve in the water supply line closed. Internal water filter (near to the inlet valve)
blocked. Inlet valve defective.
Action/Remedy: open shut-off valve in the water supply line. Clean water filter (see chapter 6.3). Check/replace
inlet valve.
Error 4
No signal
Error message is alternating
with the standard operating
display.
flashes
beeps briefly
every 6 min-
utes
activated
Automatic resetting as
soon as the unit re-
ceives a signal from the
radio humidity sensor.
Cause:
The Defensor PH28/PH28A does not receive any signal from the radio humidity sensor (op
-
tion). Battery of the radio humidity sensor soon empty or radio humidity sensor defective.
Radio humidity sensor installed outside the signal range of 25 m.
Note: As long as the unit does not receive any signal from the radio humidity sensor it switches
to the internal humidity sensor.
Action/Remedy: Replace the battery of the radio humidity sensor. Check/replace radio humidity sensor. Install
radio humidity sensor inside the signal range.
