York YCAS0130 manual Micro Panel Contents, System Data

Micro Panel Contents

T E M P	E R R O R	0 0 . 5	° F
T E M P	R A T E -	0 . 9	° F / M

The upper message indicates the difference (error) between actual leaving chilled liquid temperature and the programmed Target temperature. The lower message indicates the rate of change of the chilled liquid leaving temperature in degrees per minute. A minus sign (-) indicates falling temperature. No sign indicates rising temperature.

L E A D S Y S T E M I S
S Y S T E M N U M B E R	#

This message advises which system is programmed as the lead.

E V A P P U M P I SO F F

E V A P H E A T E R I S O N

This message indicates the position of the optional auxiliary contacts for the evaporator water pump and the status of the evaporator heater.

For the evaporator pump contacts, ON = contacts closed, OFF = contacts open.

The Evaporator Heater status is controlled on ambient temperature as follows: If measured ambient falls below 40°F (4°C), the Evaporator Heater is switched ON. If measured ambient then rises above 45°F (7°C) the heater is switched OFF. The evaporator heater prevents water standing in the evaporator from freezing.

A C T I V E R E M O T E C T R L

N O N E

This message indicates that a remote device such as a Remote Control Center, an ISN controller, or another device sending a PWM signal for temperature or current reset is overriding control points programmed through the keypad or default microprocessor setpoints. The following displays may be encountered:

NONE	–	No remote control active. Remote
		monitoring may be active.
ISN	–	YorkTalk via ISN or Remote Control
		Center (remote mode).

PWM CURR – EMS PWM Current Limiting Enabled

PWM TEMP – EMS PWM Temp. Reset Enabled

CUR/TEMP – EMS PWM Current Limiting & Temperature Reset Enabled

FORM 201.19-NM1 (204)

System Data:

The following sequence of three displays are provided first for System 1, then for System 2, and then for Sys- tems 3 and 4 as applicable.

S Y S # C O M P R E S S O R

I S O N

This message indicates whether the compressor on this system is ON or OFF.

S Y S # M O T O R C U R R E N T

1 3 5 A M P S 7 8 % F L A

This message indicates the compressor motor current in amps and as a percentage of Full Load Amps.

S Y S	#	O I L =	1 7 5	P S	I	G
S P =	6 2 D P =		2 7 1	P S	I	G

This message indicates the system oil pressure, suction pressure, and discharge pressure.

S Y S	#	O I L =	1	5	4 .	8	°	F
S T =	3	9 . 0 D T = 1		2	3 .	7	°	F

This message shows the system oil temperature, suction temperature, and discharge temperature.

S # S A T S U C T	= 3 4	.	7	°	F
S U C T S H E A T	= 1 0	.	5	°	F

These messages indicate compressor suction gas satura- tion temperature and superheat.

S # S A T D S C H =	1 2 9 °	F
D S C H S H E A T	= 6 2 . 8 °	F

This message indicates compressor discharge gas satura- tion temperature and superheat.

S Y S # S V S T E P = 4 0

This message indicated the compressor slide valve po- sition. 0 steps equals minimum capacity and 75 steps equals fully loaded.

150 YORK INTERNATIONAL