What, If - Defensor H15A Service Manual

Display
Error 5
Leakage sensor
Error message is displayed
until reset.
Cause:
Action/Remedy: PH15/PH27: Check/clean filler neck, tank cap and level regulating valve in tank cap (replace
5.4

What, if...?

The following table lists symptoms of malfunction that may occur in daily operation of the Defensor
PH... units, together with possible causes and suggested remedies.
Symptom
Unit does not work, LC display
remains dark
Unit does not humidify.
Room air does not reach
the set reference humidity
value.
red LED
flashes
PH15/PH27: Water tank not tight (tank cap not tight and/or level regulating valve in the tank
cap blocked or defective). Unit is not placed on a horizontal surface. Safety switch defec-
tive.
PH15A/PH27A: Inlet valve defective. Level switch defective. Safety switch defective.
tank cap if necessary) , then close tank cap correctly. Place unit on a horizontal surface.
Check/replace safety switch.
PH15A/PH27A: Check/replace inlet valve. Check/replace level switch. Check/replace safety
switch.
Cause
Unit is not connected to the
mains.
Unit fuse blown.
Ambient air humidity is higher
than selected reference value.
Float of the level switch is stuck. Clean level switch and care-
Level switch is defective. There-
fore no error message is dis-
played even though the wa-
ter level in the base tub is too
low.
Evaporator mat not installed.
Room temperature too high.
Unit very dirty.
Doors or windows are open.
Prolonged ventilation of the
room. Therefore continuous
replacement of the humidified
room air by dry outdoor air.
Room to large.
Buzzer Error relay
buzzes loudly activated
(can not be
switched off)
Remedy
Connect unit to the mains.
Replace unit fuse
No remedy required, change
reference humidity value if nec-
essary.
fully remove any lime scale if
necessary.
Replace the level switch.
Install evaporator mat.
Reduce room temperature to
20-22°C.
Perform maintenance (see
chapter 6 in the operating
instructions)
Close doors and windows.
Ventilate room only a short
time!
Make further clarifications.
39
Resetting
Switch unit off, then on
again.