HD101-HD401 Troubleshooting

Step 1

Step 2

Step 3

Step 4

Does the main power switch provide

NO

 

Check the switch, transformer

power to the green power LED?

 

 

and/or line voltage

 

YES

 

Is Disable connection intact?

NO

Reattach.

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

Is there a Call For Heat?

 

NO

 

Is temperature controller

NO

 

 

 

 

installed?

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

Does the Pump come on?

NO

Is there 120VAC at the pump or

NO

 

 

pump relay contacts?

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

Does the combustion air

 

NO

Is there120 VAC at the blower,

NO

 

 

between the red & white leads?

 

blower come on?

 

 

 

 

 

 

 

 

 

 

 

 

NO

Check safeties, I.E. Flow switch, high

 

 

 

 

 

YES

 

 

 

 

 

limit, vent switch, thermostat, etc.

 

 

 

 

 

 

 

Install.

Check and correct power

connections at main terminal block, circuit breaker panel or pump relay.

Check and correct power

connections at main terminal block, ignition module, circuit breaker panel or blower relay.

Step 5

Step 6

Step 7

Is 24VAC at the NO side of

NO

the air pressure switch?

 

YES

 

Is 24VAC at PS on ignition module?

Is connecting plug secure?

YES

Does igniter prove?

NO

 

Is blower pressure setting correct? Should be about 0.5” W.C. (low speed)

YES

Replace low air pressure switch.

NOCorrect wiring.

Is Amp draw during heat-

NO

up for HSI greater than

 

3.1 Amps?

 

NO

Correct the blower

shutter setting.

 

NO

Is the air filter or

air intake blocked?

YES

Remove blockage and/or replace filter

Replace HSI

YES

YES

 

 

NO

Is air switch bouncing?

 

YES

 

 

 

 

 

 

 

Step 8

Step 9

Step 10

Is the flame sensor signal to the ignition

NO

Is inlet gas supply pressure

 

 

NO

Correct inlet gas supply pressure

 

 

 

module greater than 1 Micro Amp (µA) DC?

 

correct?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

YES

 

 

 

NO

 

 

 

 

Adjust manifold gas

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pressure.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is manifold gas

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

pressure correct?

Replace gas valve

 

 

Does the unit run longer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

than 10 seconds?

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

Does the unit run at least

YES

 

Does the air pressure

 

Replace high air pressure switch

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

YES

 

 

5 seconds?

 

 

 

reach 0.9” W.C.?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

NO

 

Is the air filter or air

NO

Replace blower

 

 

 

 

Is the polarity of incoming

 

 

 

 

 

 

 

 

 

 

 

 

 

The unit is okay

 

 

 

 

 

 

intake blocked?

 

 

 

 

 

power supply correct?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

YES

 

 

 

 

 

Remove blockage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Correct supply wiring

 

 

 

 

 

 

 

 

 

and/or replace filter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Call our Technical Service Department

 

 

 

 

Is sensor

 

probe grounded?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

YES

Replace Sensor

 

 

1-800-947-2975 Outside California

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1-800-627-2975 Inside California

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Raypak operating instructions HD101-HD401 Troubleshooting

HD101, HD401 specifications

Raypak is renowned for its commitment to high-quality heating solutions, with the HD101 and HD401 models standing out in their product range. These units are designed specifically for commercial applications, providing reliable and efficient hydronic heating systems. The HD series embodies innovation while addressing the unique demands of larger spaces.

One of the main features of the HD101 and HD401 is their stainless steel construction, which ensures increased durability and resistance to corrosion. This design choice enhances the longevity of the units, making them ideal for various installations in commercial or industrial settings.

Both models are equipped with a high-efficiency heat exchanger that maximizes heat transfer while minimizing energy consumption. This feature is particularly significant in today’s environmentally conscious market, as it contributes to lower operating costs and reduced carbon footprints. The heat exchangers are engineered for easy maintenance, offering simplicity when service is required.

In terms of technology, the HD101 and HD401 include advanced digital controls that allow for precise temperature regulation. This user-friendly interface enables operators to easily manage and monitor heating parameters, facilitating optimal performance and energy management.

The models also feature modulating burners that adjust their output according to the heating demand. This capacity for modulation results in smoother operation and an overall increase in efficiency, as the burners can maintain consistent temperatures without excessive energy use.

Another noteworthy characteristic is their compatibility with various control systems, including BMS (Building Management Systems). This adaptability allows for seamless integration into existing infrastructure, providing users with greater versatility and control over their heating environments.

Both the HD101 and HD401 come with advanced safety features, including flame rollback protection and pressure monitoring, ensuring safe operation even in demanding conditions. Additionally, their compact design allows for easy installation in limited spaces while still providing powerful heating capabilities.

Ultimately, the Raypak HD101 and HD401 are exceptional choices for those in need of high-efficiency commercial heating solutions. With their robust construction, advanced technology, and user-friendly features, these models promise to deliver reliable performance and energy savings for years to come. Whether for a large facility or a specific industrial application, they stand ready to meet the heating challenges of today’s commercial landscape.