Sanden GAU?315EQTA, Сервисная книжка

Страница: 27 / 48

Sanden Heat Pump –– Service Technical Book
Page 27 of 48
Check Points
Error
Code
Error Contents
Error Detection Condition &
Diagnostic
Connector
No. or
Maintenance
Monitor No.
Connector
Colour
Judgment & Repair Methods
E044 When 50degC or less is detected 㩷 㩷 㩷
㩷 <Check Items> 㩷 㩷 㩷
㩷
- Check if discharge thermistor is
fallen out CN4 White - Put thermistor back into the pocket
on pipe if it is out.
㩷 - Check if expansion valve
connector is fallen out or not
connected properly CN10 White - Put it back on properly if it is not in
right position
㩷 - Check resistance between 2
phases on expansion valve coil
(see table) 㩷 㩷 - Abnormal: Valve coil replacement
required (together with PC board)
- Normal: Heat pump unit
replacement required
㩷
HP Discharge
Temperature Thermistor
Detection Error
- leakage on refrigerant pipes
㩷 㩷
- Heat pump unit replacement
required
E045 When detected temperature is
that detected on ambient
temperature ther3degC 㩷 㩷 㩷
㩷 <Check Items> CN4 White 㩷
㩷 - Check if discharge thermistor is
fallen out from evaporator 㩷 㩷 - Put thermistor back into the pocket
on evaporator if it is out.
㩷
HP Defrost Thermistor
Detection Error
- Malfunction of defrost thermistor 㩷 㩷 - Replace defrost thermistor
E047 When detected high pressure
switch open
㩷 㩷 㩷
㩷
<Check Items>
㩷 㩷 㩷
㩷 - Check on HP connector filter 㩷 㩷 - Remove dust if any
㩷
- Bends or blockings on HP
connection pipes CN7 White -Correct piping and remove bends
and blockings
㩷
- freeze on pipes
㩷 㩷
- Check temperature on pipe cover
that is exposed to ambient
temperature
㩷
- Water valve is closed
㩷 㩷
- Open water valve
㩷
- Stopper valve is closed
㩷 㩷
- Open stopper valve
㩷
- confirm tank is filled
㩷 㩷
- fill tank with water if it is not
㩷
- Water circulation pump
malfunction
㩷 㩷
- If Water circulation pump do not
start operating even after turning it on
on the timer setting panel, it is a
malfunction of the water circulation
pump.
㩷
- Check if air exists in water
㩷 㩷
- If noise of air being released can be
heard when water drain plug or PTR
valve is loosened, remove air.
㩷
- Check if HP inlet thermistor is
fallen out
㩷 㩷
- Put thermistor back to the right
position if it is out
㩷
- Check if HP outlet thermistor is
fallen out
㩷 㩷
- Put thermistor back to the right
position if it is out
㩷
- Check if discharge thermistor is
fallen out
㩷 㩷
- Put thermistor back to the right
position if it is out
- Check if expansion valve
connector is fallen out or not
connected properly
㩷 㩷
- Put it back on properly if it is not in
right position
㩷
㩷
High Pressure Side Error
㩷
- Check resistance between 2
phases on expansion valve coil
(see table)
㩷 㩷
- Abnormal: Valve coil replacement
required (together with PC board)
- Normal: Heat pump unit
replacement required