Carrier 30GK manual Ccn

ALARM CODE DESCRIPTIONS

Code	Alarm name	Description	Action	Pumpdown	Reset type	Probable cause
49	Low suction overheat, circuit B		Circuit B shut down	Yes	Manual	Ditto
50	Low oil pressure, compressor A1	Oil pressure < min. threshold	Circuit A shut down	No	Manual	Compressor, crankcase
						heater, pressure sensor or
						EXV faulty, refrigerant
						charge too high, low oil
						charge
51	Low oil pressure, compressor B1	Ditto	Circuit B shut down	No	Manual	Ditto
52	Low oil pressure, compressor A2	Ditto	Compressor A2 shut down		Manual	Ditto
53	Low oil pressure, compressor B2	Ditto	Compressor B2 shut down		Manual	Ditto
54	Low oil pressure, compressor A3	Ditto	Compressor A3 shut down		Manual	Ditto
55	Low oil pressure, compressor B3	Ditto	Compressor B3 shut down		Manual	Ditto
56	Low oil pressure, compressor A4	Ditto	Compressor A4 shut down		Manual	Ditto
57	Low oil pressure, compressor B4	Ditto	Compressor B4 shut down		Manual	Ditto
58	Evaporator water flow control fault	1. Interlock not closed before end	Unit shut down.	No	Manual	Evaporator water flow fault
		of start-up delay	Pump shut down
		2. Pump shut down for 2 mins
		and water flow contact closed
59	Low pressure fault, circuit A	Circuit operating, and suction pressure	Circuit A shut down	No	Auto first time,	Low refrigerant charge, EXV
		below permitted threshold for more			then manual*	faulty or filter dirty
		than 3 mins.
60	Low pressure fault, circuit B	Ditto	Circuit B shut down	No	Ditto	Ditto
61	Repeated high pressure load sheds, circuit A	More than 6 successive capacity load	None	No	Auto	Transducer faulty, condenser
		sheds in the circuit due to exceeded				ent. air temp., evaporator ent.
		high pressure				water temp. too high, cond.
						blocked or fan flow rate too
						low
62	Repeated high pressure load sheds, circuit B	Ditto	Ditto		Ditto	Ditto
63	High pressure switch not reset or reverse compressor	The high pressure switch has not been	Circuit A shut down	No	Manual	The high pressure switch has
	rotation, circuit A	reset after a high pressure cut-out,				not been reset, poor electrical
		or the lead compressor does not work				connection of lead compr.
64	High pressure switch not reset or reverse compressor	Ditto	Circuit B shut down	No	Manual	Ditto
	rotation, circuit B
65	Control box thermostat fault	Sensor overheat	Unit shut down		Manual	Control box poorly
						ventilated
66	Loss of communication with System Manager	Units controlled by SM, and	Unit operates in autonomous mode		Auto	CCN network fault
		communication with the module over
		2 mins. faulty
67	Loss of communication with the master or slave	Master/slave connection interrupted	Unit operates in autonomous mode		Auto	CCN network fault
		beween the two units for more than
		2 mins.
68	Master/slave configuration error	Poor master/slave configuration	Master/slave control not allowed		Auto/manual in	Master/slave configuration
					case of heating/	fault
					cooling fault
69	Initial factory configuration necessary	All factory parameters are at zero	Unit prevented from starting		Auto	No factory configuration
70	Poor factory configuration.	Poor factory configuration	Ditto		Ditto	Factory configuration error

1.Compr. A3 configured and A2 absent

2.Compr. A4 configured and A2 or A3 absent

3.No lead compr. in circuit B

4.Compr. B3 configured and B2 absent

5.Compr. B4 configured and B2 or B3 absent

6.Difference of compressors in circ. A and B too high

7.Fan configured for a water-cooled condenser

8.No fans configured

9.Heat reclaim option configured, and heat reclaim sensors not configured

71	CCN/Clock Board fault	The CCN/Clock Board is no longer	Unit shut down	No	Auto, if the board	CCN/Clock Board faulty
		detected			is again detected
72	Emergency stop	An emergncy stop commend has been	Unit shut down	No	CCN	CCN network command
		transmitted by the CCN network.
73	Pump No. 1 fault	Evaporator water pump operating	Unit shut down	No	Manual	Pump overheat or poor
		contact open, when the pump has				pump connection
		received a commmand to operate.
74	Pump No. 2 fault	Ditto	Unit shut down	No	Manual	Ditto
75	Condenser anti-freeze protection, circuit A	Saturated temperature is under the	Unit shut down. Condenser pump	No	Auto	Discharge pressure trans-
		frost cut-out point	started, if unit is shut down			ducer faulty, refrigerant leak,
						or low cond. water temp.
76	Condenser anti-freeze protection, circuit B	Ditto	Ditto	No	Auto	Ditto
77	Lack of water flow, condenser	Water flow switch (water-cooled units)	Unit shut down	No	Manual	Condenser pump, low water
		not closed for 1 min.				flow, water flow switch
78	Condenser water flow fault, heat reclaim mode	Ditto	Units stays in cooling mode	No	Manual	Ditto
79	Heat reclaim mode fault, circuit A	More than two consecutive pumpdown	Circuit A stays in cooling mode	No	Manual	Leak or heat reclaim or drain
		sequences not successful				solenoid shut-off valve fault
80	Heat reclaim mode fault, circuit B	Ditto	Circuit B stays in coolng mode	No	Manual	Ditto
81	High pressure fault, circuit A	Circuit operating and discharge pressure Unit shut down		No	Manual, the high	Fan circuit fault, air or
		exceeds the high pressure cut-out point			pressure command	condenser temperature too
					must be reset	high
					manually by the
					button on the HP
					pressure switch
82	High pressure fault, circuit B	Ditto	Ditto	No	Ditto	Ditto
83	Maintenance alert	A maintenance alert is active	None		Manual

1.Charge too low

2.Water loop too low

3.Air filter maintenance delay elapsed

4.Pump 1 maintenance delay elapsed

5.Pump 2 maintenance delay elapsed

6.Water filter maintenance delay elapsed

34