Friedrich PZH07K3SB User Manual

60 PB
TROUBLESHOOTING
Malfunction Analysis
Malfunction Possible Reasons How to solve
Insufcient cooling/heating
Something may block the indoor/out-
door air outlet
"Make sure that there is no obstacle at
the indoor/ outdoor air outlet."
"Make sure that the grill is suitable for
the unit. Inappropriate grill will cause
the compressor under protection mode.
Make sure ventilation rate of grille over
70% in the case of area."
Set unsuitable temperature "Set higher/lower temperature by the
control board.
NOTE: temperature setting restriction
will restrict the setting temperature.
See the Setting Temperature Range
chapter."
Indoor air lter dirty Should clean the lter every month at
least.
Room hot/cold "Let unit run a little longer that room
temperature will be lower/higher."
Heat leakage between indoor and
outdoor
Block the leakage place.
Indoor coil not cold/heat Charge refrigerant.
Unit has noise "Some moving parts of the unit have
become loose or cause bad vibration.
Something is in the air way."
Make sure that all moving parts are
assembled well, and nothing is in the
air way.
Bad smell when heating The dust on the E-heater is heating The bad smell will disappear a little
later.
Outlet air not always cool/warm Outlet temperature is not high enough
when heating by heat pump
"When outdoor ambient temp is low,
the heat pump will not be able to offer
enough heat. Soon after that, the E-
heater will come on to heat."
Fan stops when cooling/heating It is normal when the CONSTANT FAN
is OFF. You can enable the CONSTANT
FAN.
Outdoor is dripping water. Drain pipe kit hasn't been installed. Install the drain pipe kit.
Indoor is dripping water. Wall sleeve is not installed correctly. "Install the wall sleeve according to the
installation manual."
Indoor coil freeze. Outdoor temperature is too low in cool-
ing mode
"When outdoor temperature drops to
55°F(12.8°C) or below, it will cause
indoor coil to freeze. Open the fresh air
door, and running at fan mode."
Filter dirty Clean the lter to recover the normal
air ow
E2 Indoor return air temperature sen-
sor failure
Indoor return air temperature sensor
open circuit or short circuit
Check whether the plug is rmly con-
nected. If the sensor is broken,replace
it. See gure 703.
E3 Indoor coil temperature sensor
failure
Indoor coil temperature sensor open
circuit or short circuit
Check the sensor connection. If the
sensor is bad, replace with a new one.
See gure 703.

Friedrich PZH07K3SB Specifications

General

Brand	Friedrich
Model	PZH07K3SB
Category	Air Conditioner
Language	English