GVZC20 Installation Manual

23
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
Comp discharge temp > 200F
Comp discharge temp < 105F
Comp discharge SH > 70F
Comp discharge SH < 20F
High pressure > 490psi
High pressure SSV< 270psi
High pressure LSV< 270psi
LSV SC > 12F
LSV SC < 4F
Low pressure < 40psi
Requested % demand < Actual %
Requested % demand > Actual %
Repeated stop/start
Weak heating
No switch heating
Noise
Incomplete defrost operation
Stop operation
Sweating liquid line
Liquid stop valve does not fully open
X X X X X X X X X X
Gas stop valve does not fully open
X X X X X X X X X
Line set restriction
X X X X X X X X X X
Line set length is too long
X X X
Blocked filter-dryer
X X X X X X X X X X
OD EEV coil failure
X X X X X X X X X X X X X X X X
OD EEV failure
X X X X X X X X X X X X X X X X
Check valve failure – Leakage
X X X X X X X
High Pressure switch failure
X
Pressure sensor failure
X X X X X X X X X X X X
Discharge temp sensor failure
X X X X X X X X X
Coil temp sensor failure
X X X X X X
Defrost sensor failure
X X X X X X
Liquid temp sensor failure
X X X X
Ambient temp sensor failure
X X X X X X X
OD recirculation
X X X X X X X X
ID recirculation
X X X X X X
Dirty OD Heat-exchanger
X X X X X X X X
Dirty ID Heat-exchanger
X X X X X X
Outdoor Ambient temp is too high
X X X X X X
Outdoor Ambient temp is too low
X X X X X X X X X X
ID suction temp is too high X X X X X
ID suction temp is too low X X X
Mixture of non-condensible gas X X X X X X X X
OD fan motor failure
X X X X X X X
RV failure
X X X X X X X X X
RV coil failure
X X X X X X X X X
Over charge
X X X X X X X X X X
Under charge
X X X X X X X X X X
Leak
X X X X X X X X X X
TXV failure
X X X X X X X X
TXV size is small
X
TXV size is big
ID failure
X X X X X X X X X X X X X X X X X X
OD Control Board failure
X
Compressor failure
X X X X X X X X X X X X
Cooling loop is not attached
X X X
Cooling loop grease is not enough
X X X
Compressor and Gas furnace are operating at the same time
X X
Low ID CFM
X X X X X X X
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A
VOID
CONTACT WITH THE CHARGED AREA.
•N
EVER
TOUCH THE CHARGED AREA BEFORE CONFIRMING THAT THE
RESIDUAL VOLTAGE IS 50 VOLTS OR LESS.
1. S
HUT
DOWN THE POWER AND
LEAVE THE CONTROL BOX FOR 10 MINUTES.
2. M
AKE SURE TO
TOUCH THE EARTH GROUND TERMINAL TO RELEASE THE STATIC ELECTRICITY FROM YOUR
BODY (TO PREVENT
FAILURE OF THE PC BOARD).
3. M
EASURE THE RESIDUAL VOLTAGE IN THE SPECIFIED MEASUREMENT POSITION USING A VOM WHILE PAYING ATTENTION NOT TO
TOUCH THE CHARGED AREA.
4. I
MMEDIATELY AFTER MEASURING THE RESIDUAL VOLTAGE,
DISCONNECT THE CONNECTORS OF THE OUTDOOR UNIT’S FAN
MOTOR. (IF THE FAN BLADE ROTATES
BY STRONG WIND BLOWING AGAINST IT, THE CAPACITOR WILL BE CHARGED, CAUSING
THE
DANGER OF ELECTRICAL SHOCK.)
WARNING
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