Manual for DH33 - Troubleshooting and error codes + PDF Download

Manual for DH33 - Troubleshooting and error codes + PDF Download

Brand: SEIKO

Category: Diving Computer

Manual Type: User Manual

Language: English

Uploaded: March 12, 2025, 3:44 a.m.

Warranty Summary

No general warranty period is specified in this manual, but periodic checks are recommended.
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The SEIKO DH33 Diving Computer offers both timekeeping and dive computer functionalities.

Time Functions: Displays time, date, calendar, and includes alarm and hourly time signal features. Time zones can be easily adjusted.

Dive Computer Functions: Automatically activates upon entering water, measuring depth, dive time, and water temperature. Provides no-decompression limits, residual nitrogen/oxygen indicators, and warnings for ascent rate, decompression, and oxygen limits. Dive log function automatically records dive data for up to 30 dives.

Nitrox Diving: Supports nitrox diving with adjustable oxygen percentage (FO2).

Dive Plan Function: Allows planning dives by calculating no-decompression limits for various depths.

Troubleshooting and error codes

Problem Possible cause Solution
The display became blank. The battery has run down. Take the watch to the retailer from whom it was purchased immediately for battery replacement.
The battery life indicator is shown. The battery is nearing its end. Take the watch to the retailer from whom it was purchased immediately for battery replacement.
The battery life indicator is flashing. The battery is nearing its end. Take the watch to the retailer from whom it was purchased immediately for battery replacement.
The watch gains/loses occasionally. The watch was left in low or high temperatures. The accuracy will be corrected when the watch returns to normal temperature. Set the time before using the watch. It is so adjusted that it operates with stable accuracy when used on the wrist within a temperature range between 5° C and 35° C (41° F and 95° F).
A blur inside the glass persists. The gasket is deteriorated, and water got inside the watch. Consult the retailer from whom it was purchased.
Three altitude rank indicator bars are flashing. Unless you are at an altitude over 6,000 m (19,700 ft), the pressure sensor is out of order. Consult the retailer from whom it was purchased.
The number of residual nitrogen indicator bars on the display increased while on the surface. You moved to a higher altitude across the altitude ranks. The watch senses the atmospheric pressure change and re-calculates residual nitrogen. The obtained residual nitrogen will be taken into consideration in calculations in the dive plan function.
The number of residual nitrogen indicator bars on the display increased during flight. The atmospheric pressure inside airplanes corresponds to altitude rank "2", and the watch has re-calculated the altitude. The watch senses the atmospheric pressure change and re-calculates residual nitrogen. The obtained residual nitrogen will be taken into consideration in calculations in the dive plan function.
The display will not return to the TIME/CALENDAR after diving. Water remains on the auto switch. Wipe the auto switch with a dry cloth.
The dive function was shown while on the surface, and a depth of more than 1.5 m (5 ft) was displayed. Water remains on the auto switch, or the auto switch was turned on during flight and the airplane landed. Wipe the auto switch with a dry cloth. Make sure that the auto switch is always clean and dry. In a place such as inside an airplane where the atmospheric pressure changes sharply, take utmost care not to leave the auto switch wet.
The dive function will not start. A dive beyond the specified limit was made within the past 48 hours. Do not use the watch for diving for 48 hours.
The dive function will not start. The battery life indicator is lighting up or flashing. Take the watch to the retailer from whom it was purchased immediately for battery replacement.
The dive function will not start. Three altitude rank indicator bars are flashing. The watch cannot be used for diving at an altitude over 6,000 m (19,700 ft). Unless you are at an altitude over 6,000 m, the pressure sensor is out of order. Consult the retailer from whom it was purchased.

Troubleshooting and error codes

Problem Possible cause Solution
The display became blank. The battery has run down. Take the watch to the retailer from whom it was purchased immediately for battery replacement.
The battery life indicator is shown. The battery is nearing its end. Take the watch to the retailer from whom it was purchased immediately for battery replacement.
The battery life indicator is flashing. The battery is nearing its end. Take the watch to the retailer from whom it was purchased immediately for battery replacement.
The watch gains/loses occasionally. The watch was left in low or high temperatures. The accuracy will be corrected when the watch returns to normal temperature. Set the time before using the watch. It is so adjusted that it operates with stable accuracy when used on the wrist within a temperature range between 5° C and 35° C (41° F and 95° F).
A blur inside the glass persists. The gasket is deteriorated, and water got inside the watch. Consult the retailer from whom it was purchased.
Three altitude rank indicator bars are flashing. Unless you are at an altitude over 6,000 m (19,700 ft), the pressure sensor is out of order. Consult the retailer from whom it was purchased.
The number of residual nitrogen indicator bars on the display increased while on the surface. You moved to a higher altitude across the altitude ranks. The watch senses the atmospheric pressure change and re-calculates residual nitrogen. The obtained residual nitrogen will be taken into consideration in calculations in the dive plan function.
The number of residual nitrogen indicator bars on the display increased during flight. The atmospheric pressure inside airplanes corresponds to altitude rank "2", and the watch has re-calculated the altitude. The watch senses the atmospheric pressure change and re-calculates residual nitrogen. The obtained residual nitrogen will be taken into consideration in calculations in the dive plan function.
The display will not return to the TIME/CALENDAR after diving. Water remains on the auto switch. Wipe the auto switch with a dry cloth.
The dive function was shown while on the surface, and a depth of more than 1.5 m (5 ft) was displayed. Water remains on the auto switch, or the auto switch was turned on during flight and the airplane landed. Wipe the auto switch with a dry cloth. Make sure that the auto switch is always clean and dry. In a place such as inside an airplane where the atmospheric pressure changes sharply, take utmost care not to leave the auto switch wet.
The dive function will not start. A dive beyond the specified limit was made within the past 48 hours. Do not use the watch for diving for 48 hours.
The dive function will not start. The battery life indicator is lighting up or flashing. Take the watch to the retailer from whom it was purchased immediately for battery replacement.
The dive function will not start. Three altitude rank indicator bars are flashing. The watch cannot be used for diving at an altitude over 6,000 m (19,700 ft). Unless you are at an altitude over 6,000 m, the pressure sensor is out of order. Consult the retailer from whom it was purchased.