IQ Theratherm 17iv, Руководство пользователя и обслуживания

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27 A Division of:
EE 26
Four-way valve
reversal failure
1. Four-way valve reversal failure
2. Lack of refrigerant (no detect when T3
or T5 malfunction)
1. Switch to Cooling mode to check
the 4-way valve if it has been reversed
correctly
2. Change a new 4-way valve
3. Fill with gas
EE27
EEPROM data
read malfunction
1. Wrong EEPROM data in the program or
failed input of EEPROM data
2. Main board failure
1. Re-enter correct EEPROM data
2. Change a new main board
EE28
The inter-chip
communication
failure on the
main control
board
Main board failure
1. Turn off electricity supply and
restart it
2. Change a new main board
PP 01
Inlet water
temperature
sensor failure
1. The sensor failure or short circuit
2. The wiring of sensor is loose
1. Re-fix the wiring of the sensors
2. Change the sensor
PP 02
Outlet water
temperature
sensor failure
1. The sensor failure or short circuit
2. The wiring of sensor is loose
1. Re-fix the wiring of the sensors
2. Change the sensor
PP 03
Heating piping
sensor failure
1. The sensor failure or short circuit
2. The wiring of sensor is loose
1. Re-fix the wiring of the sensors
2. Change the sensor
PP 04
Gas return sensor
failure
1. The sensor failure or short circuit
2. The wiring of sensor is loose
1. Re-fix the wiring of the sensors
2. Change the sensor
PP 05
Ambient
temperature
sensor failure
1. The sensor failure or short circuit
2. The wiring of sensor is loose
1. Re-fix the wiring of the sensors
2. Change the sensor
PP 06
Exhaust piping
sensor failure
1. The sensor failure or short circuit
2. The wiring of sensor is loose
1. Re-fix the wiring of the sensors
2. Change the sensor
PP 07
Antifreeze
protection in
Winter
Ambient temperature or water inlet
temperature is too low
Normal protection
PP 08
Low ambient
temperature
protection
1. Beyond the scope of using environment
2. Sensor abnormality
1. Stop using, beyond the scope of
using
2. Change the sensor
PP 10
Piping
temperature too
high protection
under cooling
mode
1. Ambient temperature is too high or the
water temperature is too high in cooling
mode
2. Refrigeration system is abnormal
1. Check the scope of using
2. Check refrigeration system
PP 11
Water
temperature (T2)
too low
protection under
cooling mode
1. Low water flow
2. T2 temperature sensor abnormal
1. Check water pump and waterway
system
2. Change T2 temperature sensor