Raypak 1005 High Limit-Manual Reset, High Limit-Auto Reset Optional, Flow Switch, Code Condition

Code	Condition
On	System OK; No faults present
Off	Possible control fault; Check power
1 Flash	Low air
2 Flashes	Flame in combustion chamber;
	No call for heat
3 Flashes	Ignition lockout
4 Flashes	Low HSI current
5 Flashes	Low 24 VAC
6 Flashes	Internal fault; Replace control

Table T: Ignition Module Diagnostic LED Flash Codes

High Limit—Manual Reset

This heater is equipped with a fixed setting manual re- set high limit temperature device as standard or it may have an optional adjustable setting manual reset high temperature device.

The fixed setting manual reset high limit is located on the In/Out header of the heat exchanger on the right side of the heater (accessible through the front door for reset as necessary).

The optional adjustable manual reset high limit is lo- cated inside the heater junction box. Push the reset button and adjust the setting to approx. 40°F (20°C) above desired outlet temperature.

Fig. 42: High Limit (Manual Reset)

High Limit—Auto Reset (Optional)

This heater may be equipped with an optional adjust- able auto reset high limit temperature device.

For H and WH systems, the optional adjustable auto reset high limit is located inside the heater junction box. Adjust the setting to approx. 20°F (10°C) above desired outlet temperature.

For Pool installations, the auto limit must be located to sense the water temperature in the main line (see Fig. 17). Adjust the setting no higher than 110°F.

Fig. 43: Adjustable High Limit (Auto Reset)

Flow Switch

This standard, dual-purpose control, mounted and wired in series with the main gas valve, shuts off the heater in case of pump failure or low water flow.

Fig. 44: Flow Switch

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