Sanyo CG1411 User Manual download pdf (Page 54)

11. POINTS TO DIAGNOSE

11-1. Indoor Unit Alarm Signal

11-2. Manifold Pressure

● To set manifold pressure there are 2 settings – low pressure and high pressure.

● Use SW1 to move to the 2 modes used to adjust the two pressures.

Press SW1 1 time for low pressure.

Press SW1 2 times for high pressure.

Press SW1 3 times for normal operation.

● Use VR1 to set the low, lighting pressure and VR2 to set the high pressure.

● Step 1: Set low pressure

1. Press SW1 and hold until LEDs 4 and 5 flash.

2. Adjust the low pressure with VR1 to 0.63 inches of water column.

● Step 2: Set high pressure

1. Press SW1 again and LEDs 1 and 2 will flash.

2. Adjust pressure with VR2 to 3.43 inches of water column.

● Step 3: Set lighting pressure

Lighting pressure will be set automatically from Step 1 and Step 2.

Check these settings 2 or 3 times to insure all are correct then reset until no LEDs flash.

NOTE

Alarm Signal Error Meaning Operation Information

Misconnection of inter-unit wiring Heating • Cooling • Dry Connect correctly

Room temp. thermistor is defective Heating • Cooling • Dry Normal: 9 – 11 kΩ at 50°F

4 – 6 kΩ at 77°F

Power Lamp Heat exch. thermistor is defective Heating • Cooling • Dry Normal: 100 – 120 kΩ at 50°F

Flashing 50 – 60 kΩ at 77°F

Fan motor is defective Heating • Cooling • Dry Alarm signal appears in 1 min.

Amp. current is high Heating • Cooling • Dry More than 17 amp.

Amp. current is low Heating • Cooling • Dry Less than 0.8 amp.

Heat exch. thermistor detects high temp Heating More than 154°F (68°C)

Outdoor Unit Fuel Inlet Pressure W.C. (kPa) Manifold Pressure W.C. (kPa)

Low High Lighting (10 sec.)

LD4, 5 Flashing LD2, 3 Flashing (verification)

CG1411 Natural gas 7.0 (1.74) 0.63 (0.157) 3.43 (0.853) 2.32 (0.579)

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Sanyo CG1411 User Manual Page 54