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ComPak
®
Series - Installation, Operation and Maintenance |
69
ComPak
®
Series IOM
Troubleshooting Guide
SYMPTOM
CAUSE
SOLUTION
Fan Off
Compressor Off
No Display On RIU
1. Main power disconnect open.
1. Turn disconnect ON.
2. Blown main power fuse.
2. Replace blown fuse.
3. Tripped circuit breaker.
3. Reset circuit breaker.
4. No 24 VAC output from transformer T2.
4. Isolate and correct problem.
Fan On Compressor
On or Off
No Display On RIU
1. Cable between ComPak® and terminal unit is
disconnected or damaged.
1. Check cable connection
.
Fan Off
Compressor Off
Display shows:
Fan Overload
1. Adjustable fan pulley incorrectly adjusted.
1. Adjust pulley to lower current.
2. Very low static pressure on supply duct.
2. Connect duct if not connected; correct low
static pressure.
3. Fuse FU3 blown.
3. Replace fuse.
4. Fuse FU1 & FU2 blown.
4. Replace fuses.
Fan Off
Compressor Off
Display shows:
Fire Trip
1. Fire/Smoke detection system indicates an
alarm condition.
1. System will automatically reset when
alarm condition clears.
Fan On
Compressor Off
Display shows:
Compress
Hi Pressure
Trip code
010 or 011
1. Fan belt off or loose.
1. Replace or tighten fan belt.
2. Obstruction in supply duct.
2. Remove duct obstruction.
3. Excessive refrigerant in system.
3. Remove charge to proper amount.
4. Non-condensibles in system.
4. Recover, evacuate and charge system.
5. Reheat solenoid not opening.
5. Repair reheat solenoid.
Fan On
Compressor Off
Display shows:
Compress
Hi Pressure
Trip code
100 or 101
1. A/C condenser power off.
1. Restore power to A/C condenser
2. A/C condenser fan blocked.
2. Remove blockage.
3. Excessive refrigerant charge.
3. Remove charge to proper amount.
4. Non-condensibles in system.
4. Recover, evacuate and charge system.
5. A/C solenoid not opening.
5. Repair A/C solenoid.
Fan On
Compressor Off
Display shows:
Compress
Lo Pressure
Trip code
100 or 101
1. Fan belt off or loose.
1. Replace or tighten fan belt.
2. Dirty air filter.
2. Replace air filter.
3. Obstruction in return duct.
3. Remove duct obstruction.
4. Plugged filter drier.
4. Replace filter drier.
5. TXV valve malfunctioning.
5. Replace TXV valve.
Fan On
Compressor Off
RIU shows:
Water Flow Low
1. Pool water circulation pump off
1. Turn on pump
2. Pool water filter dirty
2. Backwash filter
3. Valve in wrong position
3. Restore valve to proper position
Fan On
Compressor Off
Display shows:
Defrost Trip Active
1. Dirty air filter
1. Replace air filter
2. Ambient air temp below 75°F
2. Heat space with auxiliary heat
3. Low refrigerant charge
3. Properly charge system
4. Not enough return air
4. Adjust air flow to unit
Fan On
Compressor Off
Display shows:
Compressor Motor
Thermal Overload
1. Low refrigerant charge
1. Properly charge system
2. Plugged filter drier
2. Replace filter drier
3. Defective thermal overload
3. Replace thermal overload module
4. Defective compressor
4. Replace compressor
