START

Turn up thermostat.

Does the pump turn on? No

Is there power (120V) to

the control?

(panel or relay)

No

Yes

Check thermostat wiring and

replace thermostat if

necessary.

No

Refer to control

panels listed below. Does pump turn on?

Yes

 

Is the motor connected properly?

 

Refer to the wiring diagrams on the

 

motor and in the installation manual.

 

 

No

Is the motor hot?

Yes

Motor may have tripped

overload switch. Wait 10-15

minutes for automatic reset.

No

SECTION 15: TROUBLESHOOTING 15.1 Troubleshooting Flow

Yes

After 45 seconds pre-purge period, do the burners light? No

Yes

Check circuit breaker and/or fuse on panel supply circuit.

Refer to control panel

manuals list.

Is there power to the zone?

No

Refer to control

panel list.

Yes

Check wiring to the burner.

Make sure the burner is

plugged in.

No

Is there power (120V) at the

burner receptacle?

Yes

Disconnect power to the motor. Does the motor turn freely?

Correct gas problem.

No

Is there proper gas pressure

and flow to the burners?

Replace burner transformer.

No

Yes

No

Is the pump impeller

obstructed?

No

Motor bearings may have

failed. Replace motor.

Unplug the burner, wait 10

seconds, then plug it in

again. Does the ignition Yes module begin ignition sequence by sparking?

No

 

Pre-purge. Wait 45 seconds.

 

Do the burners light?

Yes

Check LED on module and

 

refer to LED codes below.

 

No

Is there 24V at the burner transformer secondary (blue Yes

and yellow wires)?

Check for proper vacuum

at end vent.

Troubleshoot Ends

Replace ignition module.

Chart

Do all the burners ignite

smoothly? No

55

Is the vacuum setting

too high?

No

Wrong end vent plate may be installed. Make sure plate and burner match.

Yes

Adjust system for proper

 

Module Diagnostic Codes:

LED

Problem

Solution

vacuum at the end vent.

4 second steady

 

 

 

flash at start of cycle

Normal

Wait for valve to open

 

Steady on

Microprocessor failure

Replace module

 

 

within module

 

 

Three flashes

Ignition lockout

Recycle unit: check for

 

 

Lockout of module

spark and valve opening and

 

 

after 3 tries

replace:if none, replace module

 

 

 

 

SECTION 15: TROUBLESHOOTING

Page 60 Page 62
Page 61
Image 61
Roberts Gorden CRV-B-2, CRV-B-8, CRV-B-9, CRV-B-12A, CRV-B-6, CRV-B-10, CRV-B-4 service manual Chart, Start
Page 60 Page 62

CRV-B-4, CRV-B-12, CRV-B-2, CRV-B-10, CRV-B-6 specifications

The Roberts Gordon CRV-B-9 is a state-of-the-art infrared radiant heater designed for industrial and commercial heating applications. Renowned for its efficiency and effectiveness, the CRV-B-9 represents a significant advancement in the world of space heating solutions.

One of the main features of the CRV-B-9 is its advanced infrared technology, which allows for precise heating without the necessity of warming the entire space. This targeted heating provides immediate comfort, as it directly warms objects and people rather than the air around them, making it particularly effective in large warehouses, manufacturing facilities, and retail spaces.

The heater boasts an impressive output of up to 80,000 BTUs, making it suitable for a wide range of applications. It utilizes natural gas as fuel, which contributes to its efficiency and cost-effectiveness. With a robust design and durable construction, the CRV-B-9 is built to withstand the rigors of industrial environments while ensuring a long product lifespan.

Another significant characteristic of the CRV-B-9 is its ability to integrate with advanced control systems. This includes compatibility with programmable thermostats and energy management systems, allowing for optimized temperature control and reduced energy consumption. The heater can be adjusted to suit different operational needs, making it a flexible solution for various heating scenarios.

The CRV-B-9 also features a compact design, allowing for easy installation in a variety of spaces. Its low-profile shape and modular capability enable users to arrange multiple units to achieve the desired heating coverage without compromising floor space, a crucial aspect for busy, high-traffic areas.

Safety is a priority with the CRV-B-9, which is equipped with various safety features such as a flame safety cutoff switch and over-temperature protection. These mechanisms ensure safe operation, providing peace of mind for users in demanding environments.

In summary, the Roberts Gordon CRV-B-9 infrared radiant heater stands out for its innovative technology, impressive output, energy efficiency, and safety features. Its flexibility and robust design make it an ideal choice for businesses looking to enhance comfort while minimizing energy costs. Whether in a manufacturing plant or a retail outlet, the CRV-B-9 provides a reliable and effective heating solution.
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