Rheem ARL-JEZ 16 Seer Series, Installation Instructions Manual, Page: 31 / 40

31
C aution –
UNI T M A Y ST A R T SUDDE NL Y A ND W I T H OUT W A R NI NG
Solid red L E D light indicates a thermostat call for unit operation is present at the I CC.
I CC will attempt to start unit after short cycle timer expires or when in Active
Protection mode will attempt to restart unit prior to L ockout mode.
I CC – Integrated Compressor Control
(*) – I ndicates the display code will be flashed as an output on the I CC “ L ” terminal. For example 2 flashes (blinks) from the “L ” terminal output
indicates a pressure control trip.
(** ) – L ockout modes are reset by removing line voltage, low voltage, or by pressing control T E ST button for 1 second.
T he control will attempt to start the unit when the T E ST button is pressed and released (See T E ST button label)
(***) – I ndicates A ctive Pr otection. Unit will attempt to r estar t automatically.
R ed L E D
Display C ode Diagnostic Descr iption Status I nfor mation
Solid On Call for U nit Operation Y 1 call is present from the room thermostat at the control
F or A dditional Q uestions or C omments concer ning the I C C call 1-888-923-2323
7 - Segment
Display C ode Diagnostic Descr iption Status / Possible C ause -T r oubleshooting I nfor mation
0 Standby Standby - No call for operation
c Y 1 First Stage or Single Stage Unit Operation
C Y 2 Second Stage Unit Operation (2-stage unit only)
c or C
F lashing Anti-Short Cycle T imer (3 minutes) or
Minimum R un T imer (30 seconds) W aiting for anti-short cycle timer to expire
W aiting for minimum run timer to expire
d Defrost Heat Pump Defrost Operation
d F lashing Abnormal Defrost Condition
(Defrost control exceeds maximum defrost time) 1. Defrost control miswired
2. Faulty defrost control
F I CC Fuse Open 1. L ow voltage wiring damage or miswired
1 (*)
Compressor R unning E xtremely L ong R un Cycle
(Cooling mode only) 1. L ow refrigerant charge
2. Air ducts have substantial leakage
3. Check thermostat operation
4. Y 2 thermostat signal may not be connected (2-stage units only)
5. Dirty outdoor coil
2 (*)
Pressure Control T rip (L terminal output only) 1. (See faults 21, L 21, 23, L 23)
21 (***) L ow Pressure Control T rip
Note: L ow-pressure control is ignored for 90 seconds after call
for unit operation.
A ctive Pr otection – T he I CC will try to restart the unit after the
pressure control automatically re-closes.
Unit will try to restart 3 times in the same thermostat call for
operation (Y 1) before lockout (fault L 21). 1. Unit is low on refrigerant charge
2. Indoor coil is frozen (cooling mode)
3. Dirty indoor coil or filter (cooling mode)
4. Indoor blower is not running (cooling mode)
5. Outdoor coil is frozen (heat pump mode)
6. Outdoor fan is not running (heat pump mode)
7. T E V is not operating correctly
L 21 (**)
L ockout - L ow Pressure Control T rip (**) L PC tripped three consecutive times in same thermostat call
23 (***)
High Pressure Control T rip
A ctive Pr otection – T he I CC will try to restart the unit after the
pressure control automatically re-closes.
Unit will try to restart 3 times in the same thermostat call for
operation (Y 1) before lockout (fault L 23) 1. Outdoor coil is dirty (cooling mode)
2. Outdoor fan is not running (cooling mode)
3. Dirty indoor coil or filter (heat pump mode)
4. Indoor blower is not running (heat pump mode)
5. L iquid line restriction (filter drier blocked, etc.)
6. E xcessive refrigerant charge
L 23 (**)
L ockout - High Pressure Control T rip (**) HPC tripped three consecutive times in same thermostat call
25 Outdoor Ambient T emperature Sensor 1. I CC sensor damaged (I CC will continue to operate)
27 Abnormal L ow L ine or No L ine V oltage
(See unit nameplate for operating voltage) 1. Check incoming line voltage to the disconnect and unit
2. Check wiring connections
28 Abnormal High L ine V oltage 1. Check line voltage
3 (*) Short Cycling 1. Check thermostat for intermittent demand signal
2. Check thermostat location in zone (too close to discharge grill)
5 (*) (***) Compressor will not run
A ctive Pr otection – A fter detecting compressor will not run the
I CC will shut the unit down. T he control will try to restart the
unit every 5 minutes for 4 tries. A fter that, the I CC will attempt
a restart every 20 minutes up to 6 hours. 1. Check for damaged, miswired, or wrong run capacitor
2. Check for damaged or miswired start capacitor and relay
3. Check voltage levels at I CC and compressor
4. Check for broken wires, loose connectors, or miswired
5. Check compressor motor windings for continuity
6. Check for open compressor internal protector
7. Check for excessive liquid refrigerant in compressor
L 5 (**)
L ockout – Check Compressor (**) L ockout after 6 hours of attempted restart
-
I CC M is-operation 1. Check I CC compressor relay
8 (*) I CC M is-operation (L terminal output only) 1. Check I CC compressor relay
9 (*) I CC Secondary V oltage L ow (< 18V ) 1. Check transformer for miswiring or overloading.
92-102221-01-02
FIGURE 4
E-SERIES DIAGNOSTIC LABEL