Brand: AIRCOMMAND
Category: Air Conditioner
Manual Type:
Language:
Manual for HERON 2.2 - Troubleshooting and error codes + PDF Download
Uploaded: April 8, 2025, 1:57 p.m.
Manual Publish Date: 1999-06-07
Warranty Summary
Aircommand HERON 2.2 has a 12-month warranty against faulty workmanship and components.
Cooling Operation:
- Set fan speed to High Speed Cooling.
- Set mode to Cooling.
- Adjust thermostat counter-clockwise until condenser starts.
- Adjust thermostat gradually to maintain desired comfort.
Heating Operation:
- Set fan speed to Heating Speed.
- Set mode to Heating.
- Adjust thermostat to maximum clockwise position.
- Heating will start after a short delay.
- Adjust thermostat gradually to maintain desired comfort.
Troubleshooting and error codes
| Symptom | Probable Cause | Remedy |
|---|---|---|
| Condenser set is noisy and vibrates | Check that general pipework is not touching cabinet, lid, or chassis | Gently bend or pull away from panel etc |
| "Tipping" noise from Con/set | Fan rotor touching inlet ring | Ease motor retaining screws, and adjust |
| "Tipping" noise from A/H | Fan rotor touching inlet ring | A/H must be partially removed from cupb'd. Remove top and adj. fan ht. via 4 support bolts (5/16") |
| Unit does not energize | Circuit breaker open | Reset circuit breaker |
| A/H fan will not run on any speed | Plug not in correctly at back of S/W box | Remove control panel & push in 8 pin plug |
| Compressor & cond. fan will not run | Plug not in correctly at back of S/W box | Remove control panel & push in 3 pin plug |
| Insufficient cooling | 1. Thermostat set too high 2. Fan speed too low 3. Condenser fan not running 4. Unit is low on refrigerant charge. Generally the temp. diff. between return air and discharge air is 11 to 12°C |
Adjust more into blue Switch fan to high Check free to turn Check resistor ok Refrigeration Mech. to adjust charge |
| Insufficient heating | 1. Thermostat set too low 2. If no heating apparent check 8 pin plug at back of switch box 3. Element faulty |
Adjust further into red Remove control panel and push in plug Replace element |
| Water drips from A/H | 1. Faulty drain installation, elbow into A/H must not protrude above grommet 2. Drain hose does not have continuous downward gradient 3. Drain hose kinked or blocked 4. Condensate dripping off 3/8 flare nut on A/H |
Check correct elbow has been used at A/H see pp. 4 Adjust accordingly see pp. 4 & fig. 10 Ensure elbow is used at top of vertical drop. Wrap bituminous tape around f/nut to insulate |
Troubleshooting and error codes
| Symptom | Probable Cause | Remedy |
|---|---|---|
| Condenser set is noisy and vibrates | Check that general pipework is not touching cabinet, lid, or chassis | Gently bend or pull away from panel etc |
| "Tipping" noise from Con/set | Fan rotor touching inlet ring | Ease motor retaining screws, and adjust |
| "Tipping" noise from A/H | Fan rotor touching inlet ring | A/H must be partially removed from cupb'd. Remove top and adj. fan ht. via 4 support bolts (5/16") |
| Unit does not energize | Circuit breaker open | Reset circuit breaker |
| A/H fan will not run on any speed | Plug not in correctly at back of S/W box | Remove control panel & push in 8 pin plug |
| Compressor & cond. fan will not run | Plug not in correctly at back of S/W box | Remove control panel & push in 3 pin plug |
| Insufficient cooling | 1. Thermostat set too high 2. Fan speed too low 3. Condenser fan not running 4. Unit is low on refrigerant charge. Generally the temp. diff. between return air and discharge air is 11 to 12°C |
Adjust more into blue Switch fan to high Check free to turn Check resistor ok Refrigeration Mech. to adjust charge |
| Insufficient heating | 1. Thermostat set too low 2. If no heating apparent check 8 pin plug at back of switch box 3. Element faulty |
Adjust further into red Remove control panel and push in plug Replace element |
| Water drips from A/H | 1. Faulty drain installation, elbow into A/H must not protrude above grommet 2. Drain hose does not have continuous downward gradient 3. Drain hose kinked or blocked 4. Condensate dripping off 3/8 flare nut on A/H |
Check correct elbow has been used at A/H see pp. 4 Adjust accordingly see pp. 4 & fig. 10 Ensure elbow is used at top of vertical drop. Wrap bituminous tape around f/nut to insulate |