Check Code 1C (Miswiring In Indoor/Outdoor Units) And 1E - Toshiba RAS-10NKV-E Service Manual

10-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1E

<Check procedure>
Gas leakage, disconnection of
TS/TC sensors (Check code
Is connector of coil connected to inverter?
Is positioning sound of valve (sound hitting to stopper)
heard from valve when the air conditioner starts the operation after
turning off power of the air conditioner once?
After all the operations stopped by the remote controller, the power
keeps being supplied to outdoor unit for approx. 3 minutes. If operating
the air conditioner by remote controller again just after all the operations
stopped by the remote controller, positioning of the valve is not
performed when outdoor unit is activated because supplying power to
the outdoor unit is not interrupted. After positioning of the valve, activate
the compressor and the outdoor fan. It takes approx. 7 seconds for
positioning of the valve, and sound ticktack (hitting sound to stopper) is
heard for approx. 0.5 seconds at least of that period. As the sound is
low, check sound by using screwdriver, etc.
Are temp. sensors of indoor/outdoor units correctly set to the holder?
The temperature sensors which are used to control electronic control
valve include indoor heat exchanger sensor (TC),
outdoor heat exchanger temp. sensor (TE).
Gas amount check and valve clogging check
Remove TC sensor connector from the P.C. board in indoor unit.
(Remove connector from the P.C. board.) Operate the air conditioner in COOL mode by TEMP button
("Pi" sound is heard if keeping pushed for 10 seconds.) The operation enters temporary operation mode
which fixes opening degree of P.M.V. and No. of revolution of compressor. Check condensation at
outlet of P.M.V., and then check operating pressure from the service port.
Existence of condensation at outlet of P.M.V. If there is condensation at
outlet (1/4 inch = ∅6.35 mm valve side), the valve is clogged.
Check the operating pressure from service port, and add gas if pressure is low.
1C
02, 1C) (Check code 03, 1E)
Valve drive check
YES
NOTE:
YES
NOTE:
YES
1E
Discharge temp.
error, gas leakage
NO
YES
– 55 –
FILE NO. SVM-05026
Operation
Check item
Conceivable principle
cause
Measure
Item by symptoms
Set it correctly.
Replace coil valve.
Set it correctly.
Replace valve.
Add gas.