Service and Troubleshooting

SERVICE HINTS

1.Caution homeowner to maintain clean air filters at all times. Also, not to needlessly close off supply and return air registers. This reduces air flow through the system which shortens equipment service life as well as increasing operating costs.

2.Switching to heating cycle at 75° F or higher outside temperature may cause a nuisance trip of the manual reset high pressure switch.

3.The heat pump wall thermostats perform multiple functions. Be sure that all function switches are correctly set for the desired operating mode before trying to diagnose any reported service problems.

4.Check all power fuses or circuit breakers to be sure that they are the correct rating.

5.Periodic cleaning of the outdoor coil to permit full and unrestricted airflow circulation is essential.

PRESSURE SERVICE PORTS

High and low pressure service ports are installed on all units so that the system operating pressures can be observed. Pressure tables can be found in Tables 11 and 12 in this manual covering all models on both cooling and heating cycles. It is imperative to match the correct pressure table to the unit by model number.

REFRIGERANT CHARGE

The correct system R-22 charge is shown on the unit rating plate. Optimum unit performance will occur with a refrigerant charge resulting in a suction line temperature (6” from compressor) as shown in Table 10.

TABLE 10

		95 Degree F			82 Degree F
	Rated		OD			OD
Model	Airflow	Temperature			Temperature

PH1224	800	56	-	56	61	-	62
PH1230	1000	56	-	56	58	-	60
PH1236	1100	50	-	52	52	-	54

The above suction line temperatures are based upon 80° F dry bulb/67° F wet bulb (50% RH) temperature and rated airflow across the evaporator during cooling cycle.

FAN BLADE SETTINGS

Shown in Figure 12 are the correct fan blade setting dimensions for proper air delivery across the outdoor coil.

Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimensions in Figure 12 be checked and blade adjusted in or out on the motor shaft accordingly.

FIGURE 12

FAN BLADE SETTING DIMENSIONS

Model	Dimension A

PH1224	1.00"
PH1230	.75"
PH1236	.75"

MIS-1190

SOLID STATE HEAT PUMP CONTROL TROUBLESHOOTING PROCEDURE

1.Turn on AC power supply to indoor and outdoor units.

2.Turn thermostat blower switch to fan on. The indoor blower should start. (If it doesn’t, troubleshoot indoor unit and correct problem.)

3.Turn thermostat blower switch to Auto position. Indoor blower should stop.

4.Set system switch to heat or cool. Adjust thermostat to call for heat or cool. The indoor blower, compressor, and outdoor fan should start.

NOTE: If there is no power to 24 volt transformer, the compressor and outdoor fan motor will not start for 5 minutes. This is because of the compressor short cycle protection.

Manual 2100-344 Page 14

PH1224, PH1236, PH1230 specifications

Bard PH1230, PH1236, and PH1224 are advanced heating and cooling solutions that cater to both residential and commercial spaces. These units are engineered for efficiency, reliability, and comfort, making them ideal choices for any environment. Each model comes equipped with a host of features and technologies that set them apart in the HVAC market.

One of the primary characteristics of the Bard PH series is their compact design. These units are crafted to fit in tight spaces while still delivering powerful performance. This compact nature allows for easier installation, especially in areas where space is a constraint, such as classrooms, offices, and small living areas.

The PH1230, PH1236, and PH1224 all feature a robust and efficient heat pump system. This system allows the units to provide both heating and cooling, making them versatile options throughout the year. The heat pump technology ensures that energy consumption is minimized while maintaining optimal indoor temperatures. This leads to significant savings on energy bills, making these units both environmentally friendly and cost-effective.

Another commendable aspect of the Bard PH series is their advanced filtration system. These units are designed with air quality in mind, featuring high-efficiency filters that capture dust, allergens, and other particles. This not only improves indoor air quality but also enhances the overall comfort of the space. The filters are easily accessible and replaceable, ensuring that maintenance is straightforward and convenient.

Noise reduction technology is another significant feature of the Bard PH units. These models operate quietly, which is particularly beneficial in settings such as classrooms or offices where noise can be disruptive. The innovative design minimizes operational sound levels, creating a more peaceful environment.

Durability is at the forefront of the Bard PH series’ design. Constructed with high-quality materials, these units are built to withstand harsh weather conditions. The exterior casing is resistant to corrosion, ensuring longevity and reliable performance even in the most challenging environments.

In summary, Bard PH1230, PH1236, and PH1224 are exceptional heating and cooling solutions that blend efficiency, versatility, and durability. With features like compact design, advanced heat pump technology, efficient filtration systems, noise reduction capabilities, and robust construction, these units are well-suited for a variety of applications. Whether for residential or commercial use, the Bard PH series stands out as a top choice for anyone looking to enhance comfort and energy efficiency in their space.