extra high
temperature
IPM
module
E30
temperature
sensor failure
E31
reserved
IPM adjustment
E32
data
IPM adjustment
E33
data
AC input
E34
voltage
abnomity
IPM adjustment
E35
data
E36
Reserved
IPM module
current
E37
frequence
limits
IPM module
voltage
E38
frequence
limits
Failure of Fan
E51
motor drive
8. MAINTENANCE THE UNIT
To protect the paintwork, avoid leaning or putting objects on the device. External heat pump parts can be
wiped with a damp cloth and domestic cleaner. (Attention: Never use cleaning agents containing sand,
soda, acid or chloride as these can damage the surfaces.)
To prevent faults due to sediments in the titanium heat exchanger of the heat pump, ensure that the heat
exchanger cannot be contaminated (water treatment and filter system necessary). In the even that
operating malfunctions due to contamination still occur, the system should be cleaned as described
below. (Warning: the fins on the finned tube heat exchanger are sharp-edged -- danger of being cut!)
8.1 Cleaning the pipe system in the heat exchanger
Contamination in the pipes and heat exchanger can reduce the performance of the heat pump's titanium
heat exchanger. If this is the case, the pipe system and heat exchanger must be cleaned by a
19
V.2